./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/sqmf.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/sqmf.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/bin/utaipan-vmNK8stdcF --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 24888a06200d8a603c9d35acbb4d9d45bc573dc668676385643552e5524aa211 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:40:19,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:40:19,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:40:19,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:40:19,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:40:19,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:40:19,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:40:19,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:40:19,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:40:19,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:40:19,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:40:19,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:40:19,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:40:19,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:40:19,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:40:19,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:40:19,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:40:19,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:40:19,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:40:19,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:40:19,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:40:19,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:40:19,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:40:19,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:40:19,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:40:19,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:40:19,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:40:19,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:40:19,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:40:19,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:40:19,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:40:19,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:40:19,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:40:19,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:40:19,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:40:19,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:40:19,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:40:19,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:40:19,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:40:19,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:40:19,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:40:19,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:40:19,679 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:40:19,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:40:19,680 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:40:19,680 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:40:19,681 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:40:19,681 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:40:19,682 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:40:19,682 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:40:19,682 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:40:19,683 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:40:19,683 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:40:19,683 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:40:19,684 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:40:19,684 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:40:19,685 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:40:19,685 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:40:19,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:40:19,686 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:40:19,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:40:19,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:40:19,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:40:19,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:40:19,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:40:19,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:40:19,688 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:40:19,689 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:40:19,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:40:19,689 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:40:19,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:40:19,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:40:19,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:40:19,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:40:19,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:40:19,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:40:19,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:40:19,691 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:40:19,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:40:19,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:40:19,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:40:19,692 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:40:19,692 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24888a06200d8a603c9d35acbb4d9d45bc573dc668676385643552e5524aa211 [2021-11-12 22:40:19,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:40:19,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:40:19,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:40:19,982 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:40:19,983 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:40:19,984 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/array-fpi/sqmf.c [2021-11-12 22:40:20,065 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/bin/utaipan-vmNK8stdcF/data/1b8cb67e1/acd94793aa794d44b88c965ae822b565/FLAGe273e615e [2021-11-12 22:40:20,554 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:40:20,555 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/sv-benchmarks/c/array-fpi/sqmf.c [2021-11-12 22:40:20,561 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/bin/utaipan-vmNK8stdcF/data/1b8cb67e1/acd94793aa794d44b88c965ae822b565/FLAGe273e615e [2021-11-12 22:40:20,918 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/bin/utaipan-vmNK8stdcF/data/1b8cb67e1/acd94793aa794d44b88c965ae822b565 [2021-11-12 22:40:20,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:40:20,922 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:40:20,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:40:20,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:40:20,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:40:20,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:40:20" (1/1) ... [2021-11-12 22:40:20,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7110abe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:20, skipping insertion in model container [2021-11-12 22:40:20,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:40:20" (1/1) ... [2021-11-12 22:40:20,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:40:20,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:40:21,153 WARN L228 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_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/sv-benchmarks/c/array-fpi/sqmf.c[587,600] [2021-11-12 22:40:21,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:40:21,189 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:40:21,203 WARN L228 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_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/sv-benchmarks/c/array-fpi/sqmf.c[587,600] [2021-11-12 22:40:21,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:40:21,236 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:40:21,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:21 WrapperNode [2021-11-12 22:40:21,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:40:21,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:40:21,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:40:21,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:40:21,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:21" (1/1) ... [2021-11-12 22:40:21,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:21" (1/1) ... [2021-11-12 22:40:21,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:40:21,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:40:21,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:40:21,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:40:21,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:21" (1/1) ... [2021-11-12 22:40:21,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:21" (1/1) ... [2021-11-12 22:40:21,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:21" (1/1) ... [2021-11-12 22:40:21,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:21" (1/1) ... [2021-11-12 22:40:21,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:21" (1/1) ... [2021-11-12 22:40:21,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:21" (1/1) ... [2021-11-12 22:40:21,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:21" (1/1) ... [2021-11-12 22:40:21,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:40:21,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:40:21,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:40:21,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:40:21,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:21" (1/1) ... [2021-11-12 22:40:21,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:40:21,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:40:21,347 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:40:21,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:40:21,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:40:21,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:40:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-12 22:40:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:40:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:40:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:40:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-12 22:40:21,781 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:40:21,782 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-12 22:40:21,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:40:21 BoogieIcfgContainer [2021-11-12 22:40:21,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:40:21,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:40:21,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:40:21,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:40:21,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:40:20" (1/3) ... [2021-11-12 22:40:21,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6584cd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:40:21, skipping insertion in model container [2021-11-12 22:40:21,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:21" (2/3) ... [2021-11-12 22:40:21,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6584cd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:40:21, skipping insertion in model container [2021-11-12 22:40:21,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:40:21" (3/3) ... [2021-11-12 22:40:21,806 INFO L111 eAbstractionObserver]: Analyzing ICFG sqmf.c [2021-11-12 22:40:21,812 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:40:21,812 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:40:21,861 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:40:21,869 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:40:21,869 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:40:21,884 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 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) [2021-11-12 22:40:21,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-12 22:40:21,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:21,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:40:21,890 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:40:21,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:21,896 INFO L85 PathProgramCache]: Analyzing trace with hash -735732333, now seen corresponding path program 1 times [2021-11-12 22:40:21,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:40:21,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370773746] [2021-11-12 22:40:21,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:40:21,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:40:22,037 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-12 22:40:22,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851782151] [2021-11-12 22:40:22,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:40:22,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:40:22,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:40:22,040 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:40:22,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-12 22:40:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:40:22,117 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 22:40:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:40:22,166 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 22:40:22,169 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 22:40:22,170 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:40:22,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:40:22,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-12 22:40:22,400 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-12 22:40:22,409 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:40:22,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:40:22 BoogieIcfgContainer [2021-11-12 22:40:22,444 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:40:22,447 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:40:22,447 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:40:22,448 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:40:22,448 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:40:21" (3/4) ... [2021-11-12 22:40:22,450 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-12 22:40:22,520 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112fbe9b-27f1-4965-9bf4-f7b9d919e1c7/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 22:40:22,522 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:40:22,524 INFO L158 Benchmark]: Toolchain (without parser) took 1601.26ms. Allocated memory was 90.2MB in the beginning and 111.1MB in the end (delta: 21.0MB). Free memory was 53.7MB in the beginning and 50.1MB in the end (delta: 3.6MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2021-11-12 22:40:22,525 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 90.2MB. Free memory was 62.1MB in the beginning and 62.0MB in the end (delta: 22.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:40:22,525 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.80ms. Allocated memory was 90.2MB in the beginning and 111.1MB in the end (delta: 21.0MB). Free memory was 53.5MB in the beginning and 85.7MB in the end (delta: -32.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:40:22,526 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.19ms. Allocated memory is still 111.1MB. Free memory was 85.7MB in the beginning and 84.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:40:22,526 INFO L158 Benchmark]: Boogie Preprocessor took 31.34ms. Allocated memory is still 111.1MB. Free memory was 84.1MB in the beginning and 82.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:40:22,527 INFO L158 Benchmark]: RCFGBuilder took 475.63ms. Allocated memory is still 111.1MB. Free memory was 82.6MB in the beginning and 70.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 22:40:22,529 INFO L158 Benchmark]: TraceAbstraction took 645.68ms. Allocated memory is still 111.1MB. Free memory was 69.5MB in the beginning and 52.1MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-12 22:40:22,533 INFO L158 Benchmark]: Witness Printer took 75.65ms. Allocated memory is still 111.1MB. Free memory was 52.1MB in the beginning and 50.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:40:22,536 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 90.2MB. Free memory was 62.1MB in the beginning and 62.0MB in the end (delta: 22.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.80ms. Allocated memory was 90.2MB in the beginning and 111.1MB in the end (delta: 21.0MB). Free memory was 53.5MB in the beginning and 85.7MB in the end (delta: -32.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.19ms. Allocated memory is still 111.1MB. Free memory was 85.7MB in the beginning and 84.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.34ms. Allocated memory is still 111.1MB. Free memory was 84.1MB in the beginning and 82.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 475.63ms. Allocated memory is still 111.1MB. Free memory was 82.6MB in the beginning and 70.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 645.68ms. Allocated memory is still 111.1MB. Free memory was 69.5MB in the beginning and 52.1MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 75.65ms. Allocated memory is still 111.1MB. Free memory was 52.1MB in the beginning and 50.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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); [L29] long long *b = malloc(sizeof(long long)*N); [L31] b[0] = 0 [L32] a[0] = 0 [L34] i=1 VAL [a={2:0}, b={1:0}, i=1, N=1] [L34] COND FALSE !(i