./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403e895b-e84a-4991-abe8-6a21c02e1990/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403e895b-e84a-4991-abe8-6a21c02e1990/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403e895b-e84a-4991-abe8-6a21c02e1990/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403e895b-e84a-4991-abe8-6a21c02e1990/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403e895b-e84a-4991-abe8-6a21c02e1990/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403e895b-e84a-4991-abe8-6a21c02e1990/bin/utaipan-SDwSMHVbGG --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 3a80fea07b3dad363ac033c87feb8bfcf28a57d2e75bc95b67f90908b133efe1 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:22:39,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:22:39,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:22:39,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:22:39,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:22:39,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:22:39,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:22:39,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:22:39,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:22:39,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:22:39,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:22:39,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:22:39,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:22:39,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:22:39,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:22:39,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:22:39,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:22:39,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:22:39,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:22:39,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:22:39,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:22:39,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:22:39,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:22:39,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:22:39,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:22:39,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:22:39,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:22:39,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:22:39,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:22:39,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:22:39,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:22:39,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:22:39,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:22:39,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:22:39,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:22:39,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:22:39,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:22:39,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:22:39,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:22:39,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:22:39,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:22:39,781 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403e895b-e84a-4991-abe8-6a21c02e1990/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:22:39,816 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:22:39,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:22:39,818 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:22:39,820 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:22:39,820 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:22:39,820 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:22:39,821 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:22:39,821 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:22:39,830 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:22:39,830 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:22:39,830 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:22:39,831 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:22:39,831 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:22:39,831 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:22:39,832 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:22:39,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:22:39,834 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:22:39,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:22:39,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:22:39,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:22:39,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:22:39,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:22:39,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:22:39,836 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:22:39,837 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:22:39,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:22:39,837 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:22:39,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:22:39,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:22:39,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:22:39,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:22:39,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:22:39,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:22:39,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:22:39,842 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:22:39,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:22:39,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:22:39,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:22:39,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:22:39,843 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_403e895b-e84a-4991-abe8-6a21c02e1990/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403e895b-e84a-4991-abe8-6a21c02e1990/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a80fea07b3dad363ac033c87feb8bfcf28a57d2e75bc95b67f90908b133efe1 [2021-10-29 05:22:40,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:22:40,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:22:40,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:22:40,223 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:22:40,227 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:22:40,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403e895b-e84a-4991-abe8-6a21c02e1990/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c [2021-10-29 05:22:40,319 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403e895b-e84a-4991-abe8-6a21c02e1990/bin/utaipan-SDwSMHVbGG/data/f669fb0b3/a2486c63477b4df491c232dcc9747b7c/FLAG7cfdd782d [2021-10-29 05:22:40,886 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:22:40,890 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403e895b-e84a-4991-abe8-6a21c02e1990/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c [2021-10-29 05:22:40,905 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403e895b-e84a-4991-abe8-6a21c02e1990/bin/utaipan-SDwSMHVbGG/data/f669fb0b3/a2486c63477b4df491c232dcc9747b7c/FLAG7cfdd782d [2021-10-29 05:22:41,217 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403e895b-e84a-4991-abe8-6a21c02e1990/bin/utaipan-SDwSMHVbGG/data/f669fb0b3/a2486c63477b4df491c232dcc9747b7c [2021-10-29 05:22:41,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:22:41,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:22:41,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:22:41,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:22:41,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:22:41,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:22:41" (1/1) ... [2021-10-29 05:22:41,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16a4cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:41, skipping insertion in model container [2021-10-29 05:22:41,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:22:41" (1/1) ... [2021-10-29 05:22:41,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:22:41,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:22:41,509 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_403e895b-e84a-4991-abe8-6a21c02e1990/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c[502,515] [2021-10-29 05:22:41,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:22:41,556 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:22:41,572 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_403e895b-e84a-4991-abe8-6a21c02e1990/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c[502,515] [2021-10-29 05:22:41,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:22:41,602 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:22:41,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:41 WrapperNode [2021-10-29 05:22:41,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:22:41,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:22:41,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:22:41,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:22:41,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:41" (1/1) ... [2021-10-29 05:22:41,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:41" (1/1) ... [2021-10-29 05:22:41,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:22:41,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:22:41,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:22:41,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:22:41,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:41" (1/1) ... [2021-10-29 05:22:41,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:41" (1/1) ... [2021-10-29 05:22:41,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:41" (1/1) ... [2021-10-29 05:22:41,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:41" (1/1) ... [2021-10-29 05:22:41,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:41" (1/1) ... [2021-10-29 05:22:41,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:41" (1/1) ... [2021-10-29 05:22:41,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:41" (1/1) ... [2021-10-29 05:22:41,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:22:41,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:22:41,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:22:41,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:22:41,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:41" (1/1) ... [2021-10-29 05:22:41,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:22:41,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403e895b-e84a-4991-abe8-6a21c02e1990/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:22:41,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403e895b-e84a-4991-abe8-6a21c02e1990/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:22:41,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403e895b-e84a-4991-abe8-6a21c02e1990/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:22:41,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:22:41,797 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-10-29 05:22:41,799 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2021-10-29 05:22:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:22:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 05:22:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:22:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:22:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 05:22:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:22:42,352 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:22:42,353 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-29 05:22:42,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:22:42 BoogieIcfgContainer [2021-10-29 05:22:42,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:22:42,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:22:42,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:22:42,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:22:42,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:22:41" (1/3) ... [2021-10-29 05:22:42,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575d6e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:22:42, skipping insertion in model container [2021-10-29 05:22:42,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:41" (2/3) ... [2021-10-29 05:22:42,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575d6e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:22:42, skipping insertion in model container [2021-10-29 05:22:42,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:22:42" (3/3) ... [2021-10-29 05:22:42,369 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max_rec_onepoint.c [2021-10-29 05:22:42,376 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:22:42,376 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-29 05:22:42,494 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:22:42,512 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 [2021-10-29 05:22:42,514 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-29 05:22:42,537 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-29 05:22:42,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:22:42,560 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:42,561 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:22:42,562 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting checkErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:22:42,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:42,571 INFO L85 PathProgramCache]: Analyzing trace with hash -820584874, now seen corresponding path program 1 times [2021-10-29 05:22:42,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:22:42,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400436119] [2021-10-29 05:22:42,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:42,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:22:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:43,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:43,037 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:22:43,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400436119] [2021-10-29 05:22:43,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400436119] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:22:43,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:22:43,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 05:22:43,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245899576] [2021-10-29 05:22:43,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:22:43,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:22:43,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:22:43,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:22:43,067 INFO L87 Difference]: Start difference. First operand has 22 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:43,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:22:43,198 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2021-10-29 05:22:43,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:22:43,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-29 05:22:43,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:22:43,211 INFO L225 Difference]: With dead ends: 58 [2021-10-29 05:22:43,211 INFO L226 Difference]: Without dead ends: 36 [2021-10-29 05:22:43,215 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:22:43,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-29 05:22:43,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2021-10-29 05:22:43,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-29 05:22:43,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-10-29 05:22:43,263 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 6 [2021-10-29 05:22:43,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:22:43,264 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-10-29 05:22:43,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:43,265 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-10-29 05:22:43,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:22:43,266 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:43,266 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:22:43,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:22:43,267 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:22:43,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:43,269 INFO L85 PathProgramCache]: Analyzing trace with hash 910840767, now seen corresponding path program 1 times [2021-10-29 05:22:43,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:22:43,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706553779] [2021-10-29 05:22:43,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:43,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:22:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:43,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:43,434 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:22:43,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706553779] [2021-10-29 05:22:43,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706553779] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:22:43,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:22:43,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:22:43,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130597479] [2021-10-29 05:22:43,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:22:43,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:22:43,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:22:43,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:22:43,445 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 05:22:43,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:22:43,481 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-10-29 05:22:43,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:22:43,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-29 05:22:43,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:22:43,484 INFO L225 Difference]: With dead ends: 30 [2021-10-29 05:22:43,484 INFO L226 Difference]: Without dead ends: 23 [2021-10-29 05:22:43,486 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:22:43,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-29 05:22:43,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-29 05:22:43,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-29 05:22:43,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-10-29 05:22:43,499 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 9 [2021-10-29 05:22:43,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:22:43,500 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-10-29 05:22:43,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 05:22:43,502 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-10-29 05:22:43,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:22:43,506 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:43,507 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:22:43,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:22:43,511 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting checkErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:22:43,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:43,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1063426484, now seen corresponding path program 1 times [2021-10-29 05:22:43,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:22:43,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047853398] [2021-10-29 05:22:43,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:43,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:22:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:43,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:43,838 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:22:43,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047853398] [2021-10-29 05:22:43,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047853398] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:22:43,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326417954] [2021-10-29 05:22:43,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:43,840 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:22:43,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403e895b-e84a-4991-abe8-6a21c02e1990/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:22:43,842 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403e895b-e84a-4991-abe8-6a21c02e1990/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:22:43,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403e895b-e84a-4991-abe8-6a21c02e1990/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:22:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:43,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-29 05:22:43,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:44,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 6 [2021-10-29 05:22:44,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 68 [2021-10-29 05:22:44,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:44,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:22:51,005 WARN L207 SmtUtils]: Spent 6.07 s on a formula simplification that was a NOOP. DAG size: 31 [2021-10-29 05:22:54,169 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_check_~x_20 Int) (v_check_~y_20 Int)) (or (< v_check_~x_20 |c_check_#in~x|) (< |c_check_#in~y| v_check_~y_20) (and (or (forall ((check_~a.offset Int)) (let ((.cse0 (select |c_#memory_int| |c_check_#in~a.base|))) (<= (select .cse0 (+ (* v_check_~x_20 4) check_~a.offset)) (select .cse0 (+ check_~a.offset (* v_check_~y_20 4)))))) (and (< v_check_~y_20 (+ |c_check_#in~n| 1)) (<= 0 v_check_~x_20))) (or (and (<= 0 (+ v_check_~x_20 1)) (< v_check_~y_20 |c_check_#in~n|)) (forall ((check_~a.offset Int)) (let ((.cse1 (select |c_#memory_int| |c_check_#in~a.base|))) (< (select .cse1 (+ check_~a.offset (* v_check_~y_20 4))) (select .cse1 (+ (* v_check_~x_20 4) check_~a.offset))))))))) is different from false [2021-10-29 05:22:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-29 05:22:54,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326417954] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:22:54,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1921629369] [2021-10-29 05:22:54,265 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-29 05:22:54,265 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:22:54,272 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-29 05:22:54,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:22:54,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2021-10-29 05:22:54,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066591051] [2021-10-29 05:22:54,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-29 05:22:54,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:22:54,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-29 05:22:54,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=146, Unknown=1, NotChecked=24, Total=210 [2021-10-29 05:22:54,286 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:54,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:22:54,679 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-10-29 05:22:54,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 05:22:54,681 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-29 05:22:54,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:22:54,681 INFO L225 Difference]: With dead ends: 25 [2021-10-29 05:22:54,681 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:22:54,682 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=99, Invalid=284, Unknown=1, NotChecked=36, Total=420 [2021-10-29 05:22:54,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:22:54,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:22:54,683 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) [2021-10-29 05:22:54,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:22:54,683 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-10-29 05:22:54,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:22:54,684 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:22:54,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:54,684 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:22:54,686 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:22:54,689 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:22:54,690 INFO L764 garLoopResultBuilder]: Registering result SAFE for location checkErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:22:54,690 INFO L764 garLoopResultBuilder]: Registering result SAFE for location checkErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:22:54,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403e895b-e84a-4991-abe8-6a21c02e1990/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-29 05:22:54,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403e895b-e84a-4991-abe8-6a21c02e1990/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:22:54,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 05:22:54,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:54,935 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:54,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:54,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:54,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:54,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:54,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:54,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:54,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:54,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:55,068 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 05:22:55,068 INFO L857 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2021-10-29 05:22:55,068 INFO L857 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-10-29 05:22:55,068 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 05:22:55,069 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2021-10-29 05:22:55,069 INFO L853 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (= ((as const (Array Int Int)) 0) (select |#memory_int| ULTIMATE.start_main_~a~0.base)) [2021-10-29 05:22:55,069 INFO L857 garLoopResultBuilder]: For program point L47-1(line 47) no Hoare annotation was computed. [2021-10-29 05:22:55,069 INFO L860 garLoopResultBuilder]: At program point L10(lines 10 12) the Hoare annotation is: true [2021-10-29 05:22:55,069 INFO L860 garLoopResultBuilder]: At program point checkENTRY(lines 16 38) the Hoare annotation is: true [2021-10-29 05:22:55,070 INFO L857 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-10-29 05:22:55,070 INFO L857 garLoopResultBuilder]: For program point checkErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2021-10-29 05:22:55,070 INFO L857 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-10-29 05:22:55,070 INFO L857 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2021-10-29 05:22:55,070 INFO L857 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-10-29 05:22:55,071 INFO L857 garLoopResultBuilder]: For program point L11-3(line 11) no Hoare annotation was computed. [2021-10-29 05:22:55,071 INFO L857 garLoopResultBuilder]: For program point L11-4(line 11) no Hoare annotation was computed. [2021-10-29 05:22:55,072 INFO L857 garLoopResultBuilder]: For program point checkFINAL(lines 16 38) no Hoare annotation was computed. [2021-10-29 05:22:55,072 INFO L857 garLoopResultBuilder]: For program point checkErr1ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2021-10-29 05:22:55,072 INFO L853 garLoopResultBuilder]: At program point L26-2(lines 26 27) the Hoare annotation is: (let ((.cse3 ((as const (Array Int Int)) 0))) (let ((.cse0 (not (= .cse3 (select |#memory_int| |check_#in~a.base|)))) (.cse1 (and (<= 1 check___VERIFIER_assert_~cond) (<= (+ check_~y 1) check_~n) (= .cse3 (select |#memory_int| check_~a.base)) (<= 1 check_~x))) (.cse2 (not (<= (+ |check_#in~y| 1) |check_#in~n|)))) (and (or .cse0 .cse1 (not (= |check_#in~x| 0)) .cse2) (or .cse0 (not (<= 1 |check_#in~x|)) .cse1 .cse2)))) [2021-10-29 05:22:55,073 INFO L857 garLoopResultBuilder]: For program point checkEXIT(lines 16 38) no Hoare annotation was computed. [2021-10-29 05:22:55,073 INFO L857 garLoopResultBuilder]: For program point L10(lines 10 12) no Hoare annotation was computed. [2021-10-29 05:22:55,073 INFO L857 garLoopResultBuilder]: For program point L10-1(lines 10 12) no Hoare annotation was computed. [2021-10-29 05:22:55,077 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-29 05:22:55,079 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:22:55,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:22:55 BoogieIcfgContainer [2021-10-29 05:22:55,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:22:55,089 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:22:55,089 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:22:55,089 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:22:55,090 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:22:42" (3/4) ... [2021-10-29 05:22:55,093 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:22:55,101 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2021-10-29 05:22:55,107 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2021-10-29 05:22:55,108 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-29 05:22:55,109 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-29 05:22:55,109 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:22:55,168 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403e895b-e84a-4991-abe8-6a21c02e1990/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:22:55,169 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:22:55,170 INFO L168 Benchmark]: Toolchain (without parser) took 13944.67 ms. Allocated memory was 77.6 MB in the beginning and 138.4 MB in the end (delta: 60.8 MB). Free memory was 42.5 MB in the beginning and 80.4 MB in the end (delta: -38.0 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:55,171 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 77.6 MB. Free memory is still 59.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:22:55,172 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.28 ms. Allocated memory was 77.6 MB in the beginning and 107.0 MB in the end (delta: 29.4 MB). Free memory was 42.2 MB in the beginning and 84.2 MB in the end (delta: -42.0 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:55,172 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.28 ms. Allocated memory is still 107.0 MB. Free memory was 84.0 MB in the beginning and 82.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:55,173 INFO L168 Benchmark]: Boogie Preprocessor took 36.00 ms. Allocated memory is still 107.0 MB. Free memory was 82.2 MB in the beginning and 81.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:22:55,174 INFO L168 Benchmark]: RCFGBuilder took 659.26 ms. Allocated memory is still 107.0 MB. Free memory was 81.1 MB in the beginning and 62.9 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:55,179 INFO L168 Benchmark]: TraceAbstraction took 12729.37 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 62.5 MB in the beginning and 83.6 MB in the end (delta: -21.1 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:55,181 INFO L168 Benchmark]: Witness Printer took 80.28 ms. Allocated memory is still 138.4 MB. Free memory was 83.6 MB in the beginning and 80.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:55,184 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 77.6 MB. Free memory is still 59.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 375.28 ms. Allocated memory was 77.6 MB in the beginning and 107.0 MB in the end (delta: 29.4 MB). Free memory was 42.2 MB in the beginning and 84.2 MB in the end (delta: -42.0 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.28 ms. Allocated memory is still 107.0 MB. Free memory was 84.0 MB in the beginning and 82.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.00 ms. Allocated memory is still 107.0 MB. Free memory was 82.2 MB in the beginning and 81.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 659.26 ms. Allocated memory is still 107.0 MB. Free memory was 81.1 MB in the beginning and 62.9 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12729.37 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 62.5 MB in the beginning and 83.6 MB in the end (delta: -21.1 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. * Witness Printer took 80.28 ms. Allocated memory is still 138.4 MB. Free memory was 83.6 MB in the beginning and 80.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 12.5s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 63 SDslu, 97 SDs, 0 SdLazy, 120 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 8.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=1, InterpolantAutomatonStates: 21, 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, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 81 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 102 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 10.8s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 43 ConstructedInterpolants, 4 QuantifiedInterpolants, 566 SizeOfPredicates, 22 NumberOfNonLiveVariables, 138 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 1/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-29 05:22:55,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403e895b-e84a-4991-abe8-6a21c02e1990/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...