./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/indp3f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/indp3f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI --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 e65fcf75bc449caf1adc12b98cf1df32d7807702ccc9a83118e61ee3faf8aa64 --- 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-5e519f3 [2022-11-03 03:28:08,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:28:08,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:28:08,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:28:08,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:28:08,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:28:08,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:28:08,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:28:08,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:28:08,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:28:08,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:28:08,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:28:08,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:28:08,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:28:08,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:28:08,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:28:08,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:28:08,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:28:08,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:28:08,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:28:08,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:28:08,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:28:08,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:28:08,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:28:08,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:28:08,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:28:08,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:28:08,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:28:08,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:28:08,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:28:08,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:28:08,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:28:08,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:28:08,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:28:08,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:28:08,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:28:08,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:28:08,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:28:08,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:28:08,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:28:08,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:28:08,355 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:28:08,393 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:28:08,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:28:08,394 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:28:08,395 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:28:08,395 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:28:08,396 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:28:08,396 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:28:08,396 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:28:08,396 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:28:08,397 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:28:08,398 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:28:08,398 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:28:08,398 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:28:08,398 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:28:08,399 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:28:08,399 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:28:08,399 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:28:08,399 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:28:08,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:28:08,400 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:28:08,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:28:08,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:28:08,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:28:08,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:28:08,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:28:08,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:28:08,402 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:28:08,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:28:08,402 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:28:08,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:28:08,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:28:08,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:28:08,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:28:08,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:28:08,404 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:28:08,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:28:08,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:28:08,404 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:28:08,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:28:08,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:28:08,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:28:08,406 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_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e65fcf75bc449caf1adc12b98cf1df32d7807702ccc9a83118e61ee3faf8aa64 [2022-11-03 03:28:08,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:28:08,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:28:08,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:28:08,717 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:28:08,718 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:28:08,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/array-fpi/indp3f.c [2022-11-03 03:28:08,791 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/data/06aaa4091/87d9e68eb449495d8ac2e62b64caa36c/FLAG0de92c738 [2022-11-03 03:28:09,240 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:28:09,240 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/sv-benchmarks/c/array-fpi/indp3f.c [2022-11-03 03:28:09,252 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/data/06aaa4091/87d9e68eb449495d8ac2e62b64caa36c/FLAG0de92c738 [2022-11-03 03:28:09,628 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/data/06aaa4091/87d9e68eb449495d8ac2e62b64caa36c [2022-11-03 03:28:09,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:28:09,638 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:28:09,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:28:09,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:28:09,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:28:09,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:28:09" (1/1) ... [2022-11-03 03:28:09,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ecc03a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:09, skipping insertion in model container [2022-11-03 03:28:09,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:28:09" (1/1) ... [2022-11-03 03:28:09,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:28:09,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:28:09,927 WARN L230 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_6a9810a7-c5b3-433d-b817-db2cb44ef9df/sv-benchmarks/c/array-fpi/indp3f.c[589,602] [2022-11-03 03:28:09,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:28:09,979 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:28:09,994 WARN L230 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_6a9810a7-c5b3-433d-b817-db2cb44ef9df/sv-benchmarks/c/array-fpi/indp3f.c[589,602] [2022-11-03 03:28:10,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:28:10,023 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:28:10,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:10 WrapperNode [2022-11-03 03:28:10,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:28:10,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:28:10,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:28:10,025 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:28:10,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:10" (1/1) ... [2022-11-03 03:28:10,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:10" (1/1) ... [2022-11-03 03:28:10,084 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 85 [2022-11-03 03:28:10,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:28:10,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:28:10,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:28:10,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:28:10,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:10" (1/1) ... [2022-11-03 03:28:10,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:10" (1/1) ... [2022-11-03 03:28:10,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:10" (1/1) ... [2022-11-03 03:28:10,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:10" (1/1) ... [2022-11-03 03:28:10,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:10" (1/1) ... [2022-11-03 03:28:10,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:10" (1/1) ... [2022-11-03 03:28:10,107 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:10" (1/1) ... [2022-11-03 03:28:10,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:10" (1/1) ... [2022-11-03 03:28:10,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:28:10,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:28:10,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:28:10,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:28:10,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:10" (1/1) ... [2022-11-03 03:28:10,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:28:10,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:28:10,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:28:10,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:28:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:28:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:28:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:28:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:28:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:28:10,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:28:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:28:10,293 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:28:10,295 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:28:10,535 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:28:10,612 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:28:10,615 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-03 03:28:10,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:28:10 BoogieIcfgContainer [2022-11-03 03:28:10,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:28:10,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:28:10,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:28:10,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:28:10,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:28:09" (1/3) ... [2022-11-03 03:28:10,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63511960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:28:10, skipping insertion in model container [2022-11-03 03:28:10,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:10" (2/3) ... [2022-11-03 03:28:10,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63511960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:28:10, skipping insertion in model container [2022-11-03 03:28:10,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:28:10" (3/3) ... [2022-11-03 03:28:10,628 INFO L112 eAbstractionObserver]: Analyzing ICFG indp3f.c [2022-11-03 03:28:10,648 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:28:10,648 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:28:10,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:28:10,733 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;@26816755, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:28:10,733 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:28:10,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 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) [2022-11-03 03:28:10,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 03:28:10,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:10,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:28:10,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:10,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:10,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1627115878, now seen corresponding path program 1 times [2022-11-03 03:28:10,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:10,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934139816] [2022-11-03 03:28:10,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:10,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:10,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:10,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934139816] [2022-11-03 03:28:10,965 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 03:28:10,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772004599] [2022-11-03 03:28:10,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:10,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:28:10,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:28:10,969 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:28:10,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:28:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:11,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:28:11,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:28:11,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:28:11,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:28:11,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772004599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:11,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:11,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:28:11,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052122078] [2022-11-03 03:28:11,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:11,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:28:11,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:11,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:28:11,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:28:11,198 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 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 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-03 03:28:11,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:11,298 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2022-11-03 03:28:11,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:28:11,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) Word has length 9 [2022-11-03 03:28:11,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:11,309 INFO L225 Difference]: With dead ends: 24 [2022-11-03 03:28:11,309 INFO L226 Difference]: Without dead ends: 12 [2022-11-03 03:28:11,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:28:11,328 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:11,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:28:11,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-03 03:28:11,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-03 03:28:11,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 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) [2022-11-03 03:28:11,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2022-11-03 03:28:11,362 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 9 [2022-11-03 03:28:11,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:11,362 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 16 transitions. [2022-11-03 03:28:11,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-03 03:28:11,362 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2022-11-03 03:28:11,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 03:28:11,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:11,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:28:11,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 03:28:11,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:28:11,565 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:11,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:11,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1309754098, now seen corresponding path program 1 times [2022-11-03 03:28:11,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:11,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873869664] [2022-11-03 03:28:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:11,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:11,587 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:28:11,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029972605] [2022-11-03 03:28:11,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:11,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:28:11,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:28:11,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:28:11,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:28:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:11,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:28:11,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:28:11,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:28:11,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:28:11,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:11,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873869664] [2022-11-03 03:28:11,684 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:28:11,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029972605] [2022-11-03 03:28:11,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029972605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:11,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:11,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:28:11,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458518126] [2022-11-03 03:28:11,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:11,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:28:11,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:11,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:28:11,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:28:11,688 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-03 03:28:11,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:11,729 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2022-11-03 03:28:11,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:28:11,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2022-11-03 03:28:11,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:11,730 INFO L225 Difference]: With dead ends: 27 [2022-11-03 03:28:11,731 INFO L226 Difference]: Without dead ends: 20 [2022-11-03 03:28:11,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:28:11,732 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 13 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:11,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 6 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:28:11,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-03 03:28:11,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2022-11-03 03:28:11,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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) [2022-11-03 03:28:11,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2022-11-03 03:28:11,739 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 10 [2022-11-03 03:28:11,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:11,739 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2022-11-03 03:28:11,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-03 03:28:11,740 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2022-11-03 03:28:11,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 03:28:11,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:11,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:28:11,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:28:11,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:28:11,953 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:11,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:11,954 INFO L85 PathProgramCache]: Analyzing trace with hash 771742173, now seen corresponding path program 1 times [2022-11-03 03:28:11,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:11,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84856213] [2022-11-03 03:28:11,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:11,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:11,992 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:28:11,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172922542] [2022-11-03 03:28:11,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:11,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:28:11,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:28:11,994 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:28:12,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:28:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:28:12,088 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 03:28:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:28:12,145 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 03:28:12,145 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 03:28:12,147 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 03:28:12,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:28:12,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:28:12,376 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-03 03:28:12,379 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 03:28:12,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:28:12 BoogieIcfgContainer [2022-11-03 03:28:12,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 03:28:12,419 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 03:28:12,419 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 03:28:12,419 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 03:28:12,420 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:28:10" (3/4) ... [2022-11-03 03:28:12,422 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-03 03:28:12,459 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9810a7-c5b3-433d-b817-db2cb44ef9df/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 03:28:12,459 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 03:28:12,465 INFO L158 Benchmark]: Toolchain (without parser) took 2822.61ms. Allocated memory was 102.8MB in the beginning and 138.4MB in the end (delta: 35.7MB). Free memory was 61.6MB in the beginning and 88.2MB in the end (delta: -26.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 03:28:12,465 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 102.8MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:28:12,466 INFO L158 Benchmark]: CACSL2BoogieTranslator took 381.38ms. Allocated memory is still 102.8MB. Free memory was 61.4MB in the beginning and 76.7MB in the end (delta: -15.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 03:28:12,466 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.35ms. Allocated memory is still 102.8MB. Free memory was 76.7MB in the beginning and 75.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:28:12,467 INFO L158 Benchmark]: Boogie Preprocessor took 24.46ms. Allocated memory is still 102.8MB. Free memory was 75.3MB in the beginning and 73.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:28:12,467 INFO L158 Benchmark]: RCFGBuilder took 507.91ms. Allocated memory is still 102.8MB. Free memory was 73.8MB in the beginning and 59.7MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-03 03:28:12,468 INFO L158 Benchmark]: TraceAbstraction took 1793.95ms. Allocated memory was 102.8MB in the beginning and 138.4MB in the end (delta: 35.7MB). Free memory was 59.1MB in the beginning and 90.6MB in the end (delta: -31.5MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2022-11-03 03:28:12,468 INFO L158 Benchmark]: Witness Printer took 40.91ms. Allocated memory is still 138.4MB. Free memory was 90.6MB in the beginning and 88.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:28:12,477 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 102.8MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 381.38ms. Allocated memory is still 102.8MB. Free memory was 61.4MB in the beginning and 76.7MB in the end (delta: -15.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.35ms. Allocated memory is still 102.8MB. Free memory was 76.7MB in the beginning and 75.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.46ms. Allocated memory is still 102.8MB. Free memory was 75.3MB in the beginning and 73.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 507.91ms. Allocated memory is still 102.8MB. Free memory was 73.8MB in the beginning and 59.7MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1793.95ms. Allocated memory was 102.8MB in the beginning and 138.4MB in the end (delta: 35.7MB). Free memory was 59.1MB in the beginning and 90.6MB in the end (delta: -31.5MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Witness Printer took 40.91ms. Allocated memory is still 138.4MB. Free memory was 90.6MB in the beginning and 88.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L30] i=0 VAL [a={4:0}, i=0, N=1] [L30] COND TRUE i