./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE --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 40c004ecbeb3948e318f4c5fc8011bd289b059bb9dbb2959c45853a9680cf20f .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:19:19,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:19:19,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:19:19,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:19:19,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:19:19,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:19:19,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:19:19,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:19:19,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:19:19,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:19:19,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:19:19,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:19:19,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:19:19,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:19:19,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:19:19,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:19:19,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:19:19,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:19:19,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:19:19,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:19:19,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:19:19,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:19:19,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:19:19,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:19:19,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:19:19,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:19:19,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:19:19,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:19:19,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:19:19,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:19:19,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:19:19,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:19:19,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:19:19,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:19:19,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:19:19,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:19:19,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:19:19,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:19:19,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:19:19,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:19:19,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:19:19,731 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:19:19,784 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:19:19,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:19:19,786 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:19:19,787 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:19:19,787 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:19:19,787 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:19:19,787 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:19:19,788 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:19:19,788 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:19:19,788 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:19:19,790 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:19:19,790 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:19:19,790 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:19:19,791 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:19:19,791 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:19:19,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:19:19,792 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:19:19,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:19:19,793 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:19:19,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:19:19,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:19:19,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:19:19,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:19:19,794 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:19:19,795 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:19:19,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:19:19,795 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:19:19,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:19:19,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:19:19,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:19:19,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:19:19,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:19:19,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:19:19,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:19:19,799 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:19:19,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:19:19,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:19:19,800 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:19:19,801 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:19:19,801 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_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40c004ecbeb3948e318f4c5fc8011bd289b059bb9dbb2959c45853a9680cf20f [2021-10-24 10:19:20,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:19:20,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:19:20,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:19:20,198 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:19:20,199 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:19:20,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c [2021-10-24 10:19:20,282 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/data/24fffb560/5027b91578cd4659bdc3d2ac4182410f/FLAG9ed37416e [2021-10-24 10:19:20,943 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:19:20,948 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c [2021-10-24 10:19:20,963 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/data/24fffb560/5027b91578cd4659bdc3d2ac4182410f/FLAG9ed37416e [2021-10-24 10:19:21,279 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/data/24fffb560/5027b91578cd4659bdc3d2ac4182410f [2021-10-24 10:19:21,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:19:21,285 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:19:21,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:19:21,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:19:21,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:19:21,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:19:21" (1/1) ... [2021-10-24 10:19:21,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c34237d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:21, skipping insertion in model container [2021-10-24 10:19:21,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:19:21" (1/1) ... [2021-10-24 10:19:21,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:19:21,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:19:21,530 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_f406f38f-0bda-4dbe-af89-b9bfae01b940/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c[490,503] [2021-10-24 10:19:21,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:19:21,564 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:19:21,578 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_f406f38f-0bda-4dbe-af89-b9bfae01b940/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c[490,503] [2021-10-24 10:19:21,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:19:21,608 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:19:21,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:21 WrapperNode [2021-10-24 10:19:21,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:19:21,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:19:21,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:19:21,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:19:21,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:21" (1/1) ... [2021-10-24 10:19:21,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:21" (1/1) ... [2021-10-24 10:19:21,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:19:21,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:19:21,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:19:21,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:19:21,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:21" (1/1) ... [2021-10-24 10:19:21,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:21" (1/1) ... [2021-10-24 10:19:21,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:21" (1/1) ... [2021-10-24 10:19:21,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:21" (1/1) ... [2021-10-24 10:19:21,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:21" (1/1) ... [2021-10-24 10:19:21,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:21" (1/1) ... [2021-10-24 10:19:21,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:21" (1/1) ... [2021-10-24 10:19:21,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:19:21,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:19:21,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:19:21,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:19:21,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:21" (1/1) ... [2021-10-24 10:19:21,739 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:19:21,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:19:21,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:19:21,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:19:21,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:19:21,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:19:21,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:19:21,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:19:22,413 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:19:22,414 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2021-10-24 10:19:22,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:19:22 BoogieIcfgContainer [2021-10-24 10:19:22,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:19:22,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:19:22,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:19:22,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:19:22,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:19:21" (1/3) ... [2021-10-24 10:19:22,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d82f41c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:19:22, skipping insertion in model container [2021-10-24 10:19:22,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:21" (2/3) ... [2021-10-24 10:19:22,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d82f41c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:19:22, skipping insertion in model container [2021-10-24 10:19:22,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:19:22" (3/3) ... [2021-10-24 10:19:22,429 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound1.c [2021-10-24 10:19:22,436 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:19:22,436 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-10-24 10:19:22,546 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:19:22,558 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 [2021-10-24 10:19:22,559 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-24 10:19:22,579 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 29 states have internal predecessors, (40), 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) [2021-10-24 10:19:22,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-24 10:19:22,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:22,596 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-24 10:19:22,597 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-24 10:19:22,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:22,612 INFO L82 PathProgramCache]: Analyzing trace with hash 180063849, now seen corresponding path program 1 times [2021-10-24 10:19:22,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:22,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833292766] [2021-10-24 10:19:22,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:22,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:22,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:22,889 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:22,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833292766] [2021-10-24 10:19:22,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833292766] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:22,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:22,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:19:22,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138366875] [2021-10-24 10:19:22,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 10:19:22,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:22,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 10:19:22,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:19:22,929 INFO L87 Difference]: Start difference. First operand has 30 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:22,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:22,962 INFO L93 Difference]: Finished difference Result 59 states and 79 transitions. [2021-10-24 10:19:22,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:19:22,964 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-24 10:19:22,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:22,977 INFO L225 Difference]: With dead ends: 59 [2021-10-24 10:19:22,977 INFO L226 Difference]: Without dead ends: 28 [2021-10-24 10:19:22,983 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:19:23,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-24 10:19:23,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-24 10:19:23,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 27 states have internal predecessors, (30), 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) [2021-10-24 10:19:23,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-10-24 10:19:23,028 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 5 [2021-10-24 10:19:23,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:23,028 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-10-24 10:19:23,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:23,029 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-10-24 10:19:23,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 10:19:23,030 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:23,030 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 10:19:23,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:19:23,031 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-24 10:19:23,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:23,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1181966144, now seen corresponding path program 1 times [2021-10-24 10:19:23,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:23,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535557653] [2021-10-24 10:19:23,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:23,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:23,103 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:19:23,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438931812] [2021-10-24 10:19:23,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:23,104 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:19:23,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:19:23,107 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:19:23,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 10:19:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:23,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:19:23,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:19:23,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:23,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:19:23,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:23,404 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:23,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535557653] [2021-10-24 10:19:23,405 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:19:23,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438931812] [2021-10-24 10:19:23,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438931812] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:23,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:23,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:19:23,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837195177] [2021-10-24 10:19:23,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:19:23,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:23,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:19:23,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:19:23,425 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:23,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:23,476 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2021-10-24 10:19:23,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:19:23,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-24 10:19:23,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:23,482 INFO L225 Difference]: With dead ends: 55 [2021-10-24 10:19:23,482 INFO L226 Difference]: Without dead ends: 51 [2021-10-24 10:19:23,484 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:19:23,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-24 10:19:23,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 30. [2021-10-24 10:19:23,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.28) internal successors, (32), 29 states have internal predecessors, (32), 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) [2021-10-24 10:19:23,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-10-24 10:19:23,503 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 6 [2021-10-24 10:19:23,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:23,504 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-10-24 10:19:23,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:23,505 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-10-24 10:19:23,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:19:23,507 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:23,507 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:23,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:19:23,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:19:23,722 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-24 10:19:23,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:23,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1984810813, now seen corresponding path program 1 times [2021-10-24 10:19:23,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:23,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018157365] [2021-10-24 10:19:23,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:23,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:23,756 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:19:23,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [493563802] [2021-10-24 10:19:23,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:23,758 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:19:23,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:19:23,760 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:19:23,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 10:19:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:23,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-24 10:19:23,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:19:24,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:24,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:19:24,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:24,452 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:24,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018157365] [2021-10-24 10:19:24,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:19:24,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493563802] [2021-10-24 10:19:24,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493563802] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:24,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:24,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-24 10:19:24,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807348033] [2021-10-24 10:19:24,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 10:19:24,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:24,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 10:19:24,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:19:24,465 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 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) [2021-10-24 10:19:24,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:24,616 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2021-10-24 10:19:24,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:19:24,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-24 10:19:24,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:24,621 INFO L225 Difference]: With dead ends: 51 [2021-10-24 10:19:24,621 INFO L226 Difference]: Without dead ends: 49 [2021-10-24 10:19:24,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 124.4ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-24 10:19:24,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-24 10:19:24,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2021-10-24 10:19:24,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 41 states have internal predecessors, (49), 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) [2021-10-24 10:19:24,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2021-10-24 10:19:24,647 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 8 [2021-10-24 10:19:24,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:24,647 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2021-10-24 10:19:24,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 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) [2021-10-24 10:19:24,648 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2021-10-24 10:19:24,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:19:24,649 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:24,650 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:24,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:19:24,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-24 10:19:24,866 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-24 10:19:24,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:24,867 INFO L82 PathProgramCache]: Analyzing trace with hash 437869184, now seen corresponding path program 1 times [2021-10-24 10:19:24,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:24,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760509995] [2021-10-24 10:19:24,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:24,868 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:24,889 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:19:24,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619808595] [2021-10-24 10:19:24,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:24,890 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:19:24,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:19:24,891 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:19:24,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-24 10:19:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:24,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-24 10:19:24,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:19:25,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:25,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:19:25,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:25,591 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:25,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760509995] [2021-10-24 10:19:25,592 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:19:25,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619808595] [2021-10-24 10:19:25,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619808595] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:25,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:25,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-24 10:19:25,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980388390] [2021-10-24 10:19:25,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 10:19:25,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:25,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 10:19:25,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:19:25,595 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-10-24 10:19:25,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:25,694 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2021-10-24 10:19:25,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:19:25,695 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-24 10:19:25,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:25,697 INFO L225 Difference]: With dead ends: 49 [2021-10-24 10:19:25,697 INFO L226 Difference]: Without dead ends: 47 [2021-10-24 10:19:25,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 83.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:19:25,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-24 10:19:25,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2021-10-24 10:19:25,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 41 states have internal predecessors, (48), 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) [2021-10-24 10:19:25,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2021-10-24 10:19:25,715 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 10 [2021-10-24 10:19:25,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:25,716 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2021-10-24 10:19:25,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-10-24 10:19:25,716 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2021-10-24 10:19:25,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 10:19:25,717 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:25,717 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:25,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:19:25,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:19:25,926 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-24 10:19:25,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:25,926 INFO L82 PathProgramCache]: Analyzing trace with hash 482994473, now seen corresponding path program 1 times [2021-10-24 10:19:25,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:25,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695976661] [2021-10-24 10:19:25,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:25,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:25,952 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:19:25,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800195228] [2021-10-24 10:19:25,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:25,957 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:19:25,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:19:25,959 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:19:25,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-24 10:19:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:26,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 10:19:26,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:19:26,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:26,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:19:26,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:26,211 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:26,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695976661] [2021-10-24 10:19:26,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:19:26,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800195228] [2021-10-24 10:19:26,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800195228] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:26,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:26,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-24 10:19:26,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222358499] [2021-10-24 10:19:26,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:19:26,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:26,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:19:26,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:19:26,215 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:26,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:26,309 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2021-10-24 10:19:26,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:19:26,310 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-24 10:19:26,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:26,311 INFO L225 Difference]: With dead ends: 90 [2021-10-24 10:19:26,311 INFO L226 Difference]: Without dead ends: 63 [2021-10-24 10:19:26,312 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 34.0ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:19:26,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-24 10:19:26,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 44. [2021-10-24 10:19:26,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 43 states have internal predecessors, (50), 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) [2021-10-24 10:19:26,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2021-10-24 10:19:26,320 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 11 [2021-10-24 10:19:26,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:26,320 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2021-10-24 10:19:26,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:26,321 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2021-10-24 10:19:26,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 10:19:26,322 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:26,322 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:26,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-24 10:19:26,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:19:26,539 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-24 10:19:26,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:26,539 INFO L82 PathProgramCache]: Analyzing trace with hash -114351517, now seen corresponding path program 1 times [2021-10-24 10:19:26,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:26,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887140643] [2021-10-24 10:19:26,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:26,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:26,557 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:19:26,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1001414882] [2021-10-24 10:19:26,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:26,558 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:19:26,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:19:26,559 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:19:26,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-24 10:19:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:26,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-24 10:19:26,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:19:26,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:26,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:19:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:26,937 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:26,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887140643] [2021-10-24 10:19:26,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:19:26,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001414882] [2021-10-24 10:19:26,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001414882] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:26,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:26,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-24 10:19:26,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851305389] [2021-10-24 10:19:26,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:19:26,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:26,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:19:26,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:19:26,941 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-10-24 10:19:27,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:27,057 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2021-10-24 10:19:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 10:19:27,058 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-24 10:19:27,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:27,059 INFO L225 Difference]: With dead ends: 82 [2021-10-24 10:19:27,060 INFO L226 Difference]: Without dead ends: 80 [2021-10-24 10:19:27,060 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 42.2ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:19:27,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-24 10:19:27,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 64. [2021-10-24 10:19:27,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.305084745762712) internal successors, (77), 63 states have internal predecessors, (77), 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) [2021-10-24 10:19:27,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 77 transitions. [2021-10-24 10:19:27,073 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 77 transitions. Word has length 12 [2021-10-24 10:19:27,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:27,073 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 77 transitions. [2021-10-24 10:19:27,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-10-24 10:19:27,074 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions. [2021-10-24 10:19:27,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-24 10:19:27,075 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:27,075 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:27,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-24 10:19:27,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:19:27,299 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-24 10:19:27,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:27,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1777499878, now seen corresponding path program 1 times [2021-10-24 10:19:27,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:27,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050262206] [2021-10-24 10:19:27,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:27,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:27,317 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:19:27,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1816996835] [2021-10-24 10:19:27,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:27,318 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:19:27,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:19:27,319 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:19:27,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-24 10:19:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:27,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-24 10:19:27,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:19:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:27,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:19:27,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:27,823 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:27,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050262206] [2021-10-24 10:19:27,824 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:19:27,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816996835] [2021-10-24 10:19:27,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816996835] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:27,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:27,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-10-24 10:19:27,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367302372] [2021-10-24 10:19:27,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 10:19:27,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:27,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 10:19:27,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:19:27,828 INFO L87 Difference]: Start difference. First operand 64 states and 77 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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) [2021-10-24 10:19:28,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:28,152 INFO L93 Difference]: Finished difference Result 92 states and 109 transitions. [2021-10-24 10:19:28,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-24 10:19:28,158 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-24 10:19:28,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:28,160 INFO L225 Difference]: With dead ends: 92 [2021-10-24 10:19:28,160 INFO L226 Difference]: Without dead ends: 90 [2021-10-24 10:19:28,161 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 104.4ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-10-24 10:19:28,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-24 10:19:28,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 62. [2021-10-24 10:19:28,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 61 states have internal predecessors, (72), 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) [2021-10-24 10:19:28,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2021-10-24 10:19:28,180 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 14 [2021-10-24 10:19:28,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:28,181 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2021-10-24 10:19:28,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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) [2021-10-24 10:19:28,181 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2021-10-24 10:19:28,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-24 10:19:28,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:28,183 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:28,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-24 10:19:28,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:19:28,410 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-24 10:19:28,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:28,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1532792300, now seen corresponding path program 1 times [2021-10-24 10:19:28,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:28,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566819515] [2021-10-24 10:19:28,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:28,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:28,451 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:19:28,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2000638107] [2021-10-24 10:19:28,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:28,457 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:19:28,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:19:28,466 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:19:28,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-24 10:19:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:28,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-24 10:19:28,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:19:30,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:30,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:19:31,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:31,795 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:31,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566819515] [2021-10-24 10:19:31,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:19:31,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000638107] [2021-10-24 10:19:31,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000638107] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:19:31,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [409363414] [2021-10-24 10:19:31,830 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-10-24 10:19:31,831 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 10:19:31,837 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 10:19:31,844 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 10:19:31,844 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 10:19:31,936 INFO L180 QuantifierPusher]: treesize reduction 19, result has 89.9 percent of original size [2021-10-24 10:19:31,939 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:19:31,940 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:31,940 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 10:19:31,943 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:19:31,944 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:31,945 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 10:19:31,948 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-10-24 10:19:31,985 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_17|], 21=[|v_#valid_18|]} [2021-10-24 10:19:32,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:19:32,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:19:32,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:19:32,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 10:19:32,031 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,032 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:19:32,033 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,033 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:19:32,034 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:19:32,053 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 10:19:32,053 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:19:32,054 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,055 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:19:32,055 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 10:19:32,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:32,108 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:19:32,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:19:32,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:19:32,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:19:32,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:19:32,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:19:32,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:19:32,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:19:32,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:19:32,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 10:19:32,146 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,149 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:19:32,150 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,151 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:19:32,153 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-24 10:19:32,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:32,168 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,178 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 10:19:32,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-24 10:19:32,190 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 10:19:32,191 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:320, output treesize:131 [2021-10-24 10:19:32,208 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,231 INFO L185 QuantifierPusher]: treesize reduction 7, result has 95.5 percent of original size 147 [2021-10-24 10:19:32,257 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,273 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-10-24 10:19:32,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-10-24 10:19:32,323 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,336 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 198 [2021-10-24 10:19:32,356 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,363 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 220 [2021-10-24 10:19:32,381 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,390 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 236 [2021-10-24 10:19:32,400 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,409 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 320 [2021-10-24 10:19:32,421 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,433 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 228 [2021-10-24 10:19:32,447 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,454 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-10-24 10:19:32,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:32,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:32,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:32,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:32,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:32,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:32,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:32,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:32,636 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,648 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-10-24 10:19:32,656 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,669 INFO L185 QuantifierPusher]: treesize reduction 36, result has 79.2 percent of original size 137 [2021-10-24 10:19:32,690 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,701 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-10-24 10:19:32,715 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-10-24 10:19:32,738 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,748 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 198 [2021-10-24 10:19:32,765 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-10-24 10:19:32,788 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,796 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 198 [2021-10-24 10:19:32,804 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,810 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-10-24 10:19:32,818 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:32,829 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-10-24 10:19:32,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:32,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:32,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:32,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:32,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:32,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:32,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:32,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,099 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:33,110 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 318 [2021-10-24 10:19:33,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,347 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:33,394 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:33,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 271 [2021-10-24 10:19:33,415 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:19:33,425 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 362 [2021-10-24 10:19:33,439 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 10:19:36,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [409363414] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:36,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-24 10:19:36,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 10] total 24 [2021-10-24 10:19:36,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930714198] [2021-10-24 10:19:36,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 10:19:36,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:36,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 10:19:36,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2021-10-24 10:19:36,975 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-10-24 10:19:37,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:37,131 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2021-10-24 10:19:37,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 10:19:37,132 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-24 10:19:37,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:37,132 INFO L225 Difference]: With dead ends: 79 [2021-10-24 10:19:37,132 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:19:37,134 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 34 SyntacticMatches, 10 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 4816.9ms TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2021-10-24 10:19:37,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:19:37,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:19:37,134 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) [2021-10-24 10:19:37,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:19:37,135 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-10-24 10:19:37,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:37,135 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:19:37,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-10-24 10:19:37,135 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:19:37,136 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:19:37,138 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:19:37,139 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:19:37,139 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:19:37,139 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:19:37,139 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:19:37,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-24 10:19:37,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-24 10:19:37,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 10:19:37,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:37,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:37,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:37,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:37,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:37,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:37,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:37,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:40,697 INFO L853 garLoopResultBuilder]: At program point L35-2(lines 35 73) the Hoare annotation is: (let ((.cse0 (<= 0 |#t~string4.base|)) (.cse1 (<= 1 ULTIMATE.start_main_~a~0)) (.cse2 (<= 1 ULTIMATE.start_assume_abort_if_not_~cond)) (.cse3 (<= ULTIMATE.start_main_~x~0 1)) (.cse4 (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1)) (.cse5 (<= 0 |#t~string5.base|)) (.cse6 (= |#t~string5.offset| 0)) (.cse7 (<= 1 ULTIMATE.start_main_~y~0)) (.cse8 (<= 0 |#t~string6.base|)) (.cse9 (= |#NULL.offset| 0)) (.cse10 (<= 1 ULTIMATE.start_main_~x~0)) (.cse11 (= |#t~string6.offset| 0)) (.cse13 (<= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse14 (<= ULTIMATE.start_main_~a~0 1)) (.cse15 (<= 0 |#StackHeapBarrier|)) (.cse16 (<= ULTIMATE.start_main_~y~0 1)) (.cse17 (= 0 |#t~string4.offset|)) (.cse18 (= |#NULL.base| 0))) (or (let ((.cse12 (+ ULTIMATE.start_main_~s~0 1))) (and .cse0 .cse1 (<= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (= ULTIMATE.start_main_~b~0 0) .cse2 .cse3 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~temp~0 0) (<= ULTIMATE.start_main_~k~0 1) .cse4 (= ULTIMATE.start_main_~p~0 0) .cse5 .cse6 (<= ULTIMATE.start___VERIFIER_assert_~cond 1) (<= 0 ULTIMATE.start_main_~c~0) (<= 1 ULTIMATE.start_main_~k~0) .cse7 (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~cond|) (<= ULTIMATE.start_main_~c~0 0) .cse8 (<= ULTIMATE.start_main_~v~0 1) (= ULTIMATE.start_main_~d~0 1) (= ULTIMATE.start_main_~r~0 1) (<= 1 ULTIMATE.start_main_~v~0) (= ULTIMATE.start_main_~q~0 1) .cse9 .cse10 .cse11 (<= .cse12 0) .cse13 .cse14 (<= 0 .cse12) .cse15 .cse16 .cse17 .cse18)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= ULTIMATE.start_main_~p~0 1) .cse7 (= ULTIMATE.start_main_~q~0 0) .cse8 (= ULTIMATE.start_main_~r~0 0) .cse9 (= ULTIMATE.start_main_~s~0 1) .cse10 .cse11 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2021-10-24 10:19:40,697 INFO L857 garLoopResultBuilder]: For program point L35-3(lines 35 73) no Hoare annotation was computed. [2021-10-24 10:19:40,697 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-24 10:19:40,698 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-10-24 10:19:40,698 INFO L853 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string4.base|))) (and (< |#StackHeapBarrier| |#t~string6.base|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~k~0 0) (<= ULTIMATE.start_main_~x~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~b~0) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (< |#StackHeapBarrier| |#t~string5.base|) (= (ite (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond|) (= (select |#valid| |#t~string5.base|) 1) (= (select |#valid| |#t~string4.base|) 1) (= |#t~string5.offset| 0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0) (= (select |#length| |#t~string5.base|) 11) (= (select |#valid| |#t~string6.base|) 1) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) (not (= ULTIMATE.start_main_~b~0 0)) (= (select |#valid| 0) 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~d~0 1) (< |#StackHeapBarrier| |#t~string4.base|) (= (select |#length| |#t~string6.base|) 12) (= (select .cse0 (+ 1 |#t~string4.offset|)) 0) (= |#NULL.offset| 0) (= ULTIMATE.start_main_~s~0 1) (= |#t~string6.offset| 0) (= (select |#length| |#t~string4.base|) 2) (= (select .cse0 |#t~string4.offset|) 48) (= 0 |#t~string4.offset|) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| ULTIMATE.start_assume_abort_if_not_~cond))) [2021-10-24 10:19:40,698 INFO L857 garLoopResultBuilder]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-10-24 10:19:40,699 INFO L853 garLoopResultBuilder]: At program point L11-5(lines 10 16) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string4.base|))) (and (< |#StackHeapBarrier| |#t~string6.base|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~k~0 0) (<= ULTIMATE.start_main_~x~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~b~0) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (< |#StackHeapBarrier| |#t~string5.base|) (= (ite (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond|) (= (select |#valid| |#t~string5.base|) 1) (= (select |#valid| |#t~string4.base|) 1) (= |#t~string5.offset| 0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0) (= (select |#length| |#t~string5.base|) 11) (= (select |#valid| |#t~string6.base|) 1) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) (not (= ULTIMATE.start_main_~b~0 0)) (= (select |#valid| 0) 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~d~0 1) (< |#StackHeapBarrier| |#t~string4.base|) (= (select |#length| |#t~string6.base|) 12) (= (select .cse0 (+ 1 |#t~string4.offset|)) 0) (= |#NULL.offset| 0) (= ULTIMATE.start_main_~s~0 1) (= |#t~string6.offset| 0) (= (select |#length| |#t~string4.base|) 2) (= (select .cse0 |#t~string4.offset|) 48) (= 0 |#t~string4.offset|) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| ULTIMATE.start_assume_abort_if_not_~cond))) [2021-10-24 10:19:40,699 INFO L857 garLoopResultBuilder]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-10-24 10:19:40,699 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-10-24 10:19:40,700 INFO L853 garLoopResultBuilder]: At program point L11-8(lines 10 16) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string4.base|))) (and (< |#StackHeapBarrier| |#t~string6.base|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~k~0 0) (<= ULTIMATE.start_main_~x~0 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (< |#StackHeapBarrier| |#t~string5.base|) (= (ite (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond|) (= (select |#valid| |#t~string5.base|) 1) (= (select |#valid| |#t~string4.base|) 1) (= |#t~string5.offset| 0) (= ULTIMATE.start_main_~p~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0) (= (select |#length| |#t~string5.base|) 11) (= (select |#valid| |#t~string6.base|) 1) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) (= (select |#valid| 0) 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~d~0 1) (< |#StackHeapBarrier| |#t~string4.base|) (= (select |#length| |#t~string6.base|) 12) (= (select .cse0 (+ 1 |#t~string4.offset|)) 0) (= |#NULL.offset| 0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= |#t~string6.offset| 0) (= (select |#length| |#t~string4.base|) 2) (= (select .cse0 |#t~string4.offset|) 48) (<= ULTIMATE.start_main_~y~0 1) (= 0 |#t~string4.offset|) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| ULTIMATE.start_assume_abort_if_not_~cond))) [2021-10-24 10:19:40,700 INFO L857 garLoopResultBuilder]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-10-24 10:19:40,700 INFO L853 garLoopResultBuilder]: At program point L11-11(lines 55 56) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string4.base|))) (and (< |#StackHeapBarrier| |#t~string6.base|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~k~0 0) (<= ULTIMATE.start_main_~x~0 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (< |#StackHeapBarrier| |#t~string5.base|) (= (ite (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond|) (= (select |#valid| |#t~string5.base|) 1) (= (select |#valid| |#t~string4.base|) 1) (= |#t~string5.offset| 0) (= ULTIMATE.start_main_~p~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0) (= (select |#length| |#t~string5.base|) 11) (= (select |#valid| |#t~string6.base|) 1) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) (= (select |#valid| 0) 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~d~0 1) (< |#StackHeapBarrier| |#t~string4.base|) (= (select |#length| |#t~string6.base|) 12) (= (select .cse0 (+ 1 |#t~string4.offset|)) 0) (= |#NULL.offset| 0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= |#t~string6.offset| 0) (= (select |#length| |#t~string4.base|) 2) (= (select .cse0 |#t~string4.offset|) 48) (<= ULTIMATE.start_main_~y~0 1) (= 0 |#t~string4.offset|) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| ULTIMATE.start_assume_abort_if_not_~cond))) [2021-10-24 10:19:40,700 INFO L857 garLoopResultBuilder]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-10-24 10:19:40,701 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-24 10:19:40,701 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 10:19:40,701 INFO L860 garLoopResultBuilder]: At program point L11-14(lines 10 16) the Hoare annotation is: true [2021-10-24 10:19:40,701 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-10-24 10:19:40,702 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-10-24 10:19:40,702 INFO L857 garLoopResultBuilder]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-10-24 10:19:40,702 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-10-24 10:19:40,702 INFO L857 garLoopResultBuilder]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-10-24 10:19:40,702 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-24 10:19:40,703 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-24 10:19:40,703 INFO L853 garLoopResultBuilder]: At program point L49-2(lines 49 59) the Hoare annotation is: (and (<= 0 |#t~string4.base|) (= ULTIMATE.start_main_~k~0 0) (<= 1 ULTIMATE.start_assume_abort_if_not_~cond) (<= ULTIMATE.start_main_~x~0 1) (<= 0 ULTIMATE.start_main_~b~0) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) (<= 0 |#t~string6.offset|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (<= 0 |#t~string5.base|) (= ULTIMATE.start_main_~p~0 1) (<= |#NULL.offset| 0) (<= 0 |#t~string5.offset|) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0) (<= |#t~string6.offset| 0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) (<= 0 |#t~string6.base|) (not (= ULTIMATE.start_main_~b~0 0)) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~d~0 1) (<= 1 |ULTIMATE.start_assume_abort_if_not_#in~cond|) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 0 |#NULL.offset|) (<= ULTIMATE.start_main_~a~0 1) (<= 0 |#StackHeapBarrier|) (<= |#t~string5.offset| 0) (= 0 |#t~string4.offset|) (= |#NULL.base| 0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-10-24 10:19:40,703 INFO L857 garLoopResultBuilder]: For program point L49-3(lines 49 59) no Hoare annotation was computed. [2021-10-24 10:19:40,703 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 10:19:40,704 INFO L853 garLoopResultBuilder]: At program point L42-2(lines 42 62) the Hoare annotation is: (let ((.cse0 (<= 0 |#t~string4.base|)) (.cse1 (<= 1 ULTIMATE.start_assume_abort_if_not_~cond)) (.cse2 (<= ULTIMATE.start_main_~x~0 1)) (.cse3 (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1)) (.cse4 (<= 0 |#t~string5.base|)) (.cse5 (= |#t~string5.offset| 0)) (.cse6 (= ULTIMATE.start_main_~p~0 1)) (.cse7 (= ULTIMATE.start_main_~q~0 0)) (.cse8 (<= 0 |#t~string6.base|)) (.cse9 (= ULTIMATE.start_main_~r~0 0)) (.cse10 (= |#NULL.offset| 0)) (.cse11 (= ULTIMATE.start_main_~s~0 1)) (.cse12 (<= 1 ULTIMATE.start_main_~x~0)) (.cse13 (= |#t~string6.offset| 0)) (.cse14 (<= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse15 (<= 0 |#StackHeapBarrier|)) (.cse16 (<= ULTIMATE.start_main_~y~0 1)) (.cse17 (= 0 |#t~string4.offset|)) (.cse18 (= |#NULL.base| 0)) (.cse19 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (< ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0) .cse1 .cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~k~0 1) .cse3 .cse4 .cse5 (<= ULTIMATE.start___VERIFIER_assert_~cond 1) .cse6 (<= 0 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0) (<= 1 ULTIMATE.start_main_~k~0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~cond|) .cse7 .cse8 .cse9 (= ULTIMATE.start_main_~d~0 1) .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19) (and .cse0 (<= 0 ULTIMATE.start_main_~k~0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (<= 0 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~c~0) (<= ULTIMATE.start_main_~k~0 0) .cse7 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse8 (not (= ULTIMATE.start_main_~b~0 0)) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (<= ULTIMATE.start_main_~a~0 1) .cse15 .cse16 .cse17 .cse18 .cse19))) [2021-10-24 10:19:40,704 INFO L857 garLoopResultBuilder]: For program point L42-3(lines 42 62) no Hoare annotation was computed. [2021-10-24 10:19:40,704 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-24 10:19:40,704 INFO L857 garLoopResultBuilder]: For program point L43(lines 43 44) no Hoare annotation was computed. [2021-10-24 10:19:40,710 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:19:40,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:19:40 BoogieIcfgContainer [2021-10-24 10:19:40,756 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:19:40,757 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:19:40,757 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:19:40,757 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:19:40,758 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:19:22" (3/4) ... [2021-10-24 10:19:40,761 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:19:40,775 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2021-10-24 10:19:40,776 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-24 10:19:40,776 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-24 10:19:40,776 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:19:40,805 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((((((((((((0 <= "0" && 1 <= a) && \old(cond) <= 1) && b == 0) && 1 <= cond) && x <= 1) && 1 <= cond) && temp == 0) && k <= 1) && \old(cond) == 1) && p == 0) && 0 <= "egcd3-ll.c") && "egcd3-ll.c" == 0) && cond <= 1) && 0 <= c) && 1 <= k) && 1 <= y) && 1 <= \old(cond)) && c <= 0) && 0 <= "reach_error") && v <= 1) && d == 1) && r == 1) && 1 <= v) && q == 1) && #NULL == 0) && 1 <= x) && "reach_error" == 0) && s + 1 <= 0) && cond <= 1) && a <= 1) && 0 <= s + 1) && 0 <= unknown-#StackHeapBarrier-unknown) && y <= 1) && 0 == "0") && #NULL == 0) || ((((((((((((((((((((((0 <= "0" && 1 <= a) && 1 <= cond) && x <= 1) && \old(cond) == 1) && 0 <= "egcd3-ll.c") && "egcd3-ll.c" == 0) && p == 1) && 1 <= y) && q == 0) && 0 <= "reach_error") && r == 0) && #NULL == 0) && s == 1) && 1 <= x) && "reach_error" == 0) && cond <= 1) && a <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && y <= 1) && 0 == "0") && #NULL == 0) && b == y) [2021-10-24 10:19:40,806 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((((((((0 <= "0" && a == x) && \old(cond) <= 1) && c < b) && 1 <= cond) && x <= 1) && 1 <= cond) && k <= 1) && \old(cond) == 1) && 0 <= "egcd3-ll.c") && "egcd3-ll.c" == 0) && cond <= 1) && p == 1) && 0 <= c) && b == v) && 1 <= k) && 1 <= \old(cond)) && q == 0) && 0 <= "reach_error") && r == 0) && d == 1) && #NULL == 0) && s == 1) && 1 <= x) && "reach_error" == 0) && cond <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && y <= 1) && 0 == "0") && #NULL == 0) && b == y) || ((((((((((((((((((((((((((0 <= "0" && 0 <= k) && 1 <= cond) && x <= 1) && \old(cond) == 1) && 0 <= "egcd3-ll.c") && "egcd3-ll.c" == 0) && p == 1) && 0 <= y) && 1 <= c) && k <= 0) && q == 0) && c == a) && 0 <= "reach_error") && !(b == 0)) && r == 0) && #NULL == 0) && s == 1) && 1 <= x) && "reach_error" == 0) && cond <= 1) && a <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && y <= 1) && 0 == "0") && #NULL == 0) && b == y) [2021-10-24 10:19:40,807 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((((((0 <= "0" && k == 0) && 1 <= cond) && x <= 1) && 0 <= b) && b <= c) && 0 <= "reach_error") && \old(cond) <= 1) && 0 <= "egcd3-ll.c") && p == 1) && #NULL <= 0) && 0 <= "egcd3-ll.c") && b == v) && "reach_error" <= 0) && q == 0) && c == a) && 0 <= "reach_error") && !(b == 0)) && r == 0) && d == 1) && 1 <= \old(cond)) && s == 1) && 1 <= x) && cond <= 1) && 0 <= #NULL) && a <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && "egcd3-ll.c" <= 0) && 0 == "0") && #NULL == 0) && b == y [2021-10-24 10:19:40,807 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((((((((((((unknown-#StackHeapBarrier-unknown < "reach_error" && \old(cond) == cond) && a == x) && k == 0) && x <= 1) && 1 <= cond) && 0 <= b) && b <= c) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "egcd3-ll.c") && (if a == r * y + p * x then 1 else 0) == \old(cond)) && \valid["egcd3-ll.c"] == 1) && \valid["0"] == 1) && "egcd3-ll.c" == 0) && b == v) && unknown-#length-unknown["egcd3-ll.c"] == 11) && \valid["reach_error"] == 1) && q == 0) && c == a) && !(b == 0)) && \valid[0] == 0) && r == 0) && d == 1) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["reach_error"] == 12) && unknown-#memory_int-unknown["0"][1 + "0"] == 0) && #NULL == 0) && s == 1) && "reach_error" == 0) && unknown-#length-unknown["0"] == 2) && unknown-#memory_int-unknown["0"]["0"] == 48) && 0 == "0") && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && b == y) && \old(cond) == cond [2021-10-24 10:19:40,807 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((((((((((((unknown-#StackHeapBarrier-unknown < "reach_error" && \old(cond) == cond) && a == x) && k == 0) && x <= 1) && 1 <= cond) && 0 <= b) && b <= c) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "egcd3-ll.c") && (if a == r * y + p * x then 1 else 0) == \old(cond)) && \valid["egcd3-ll.c"] == 1) && \valid["0"] == 1) && "egcd3-ll.c" == 0) && b == v) && unknown-#length-unknown["egcd3-ll.c"] == 11) && \valid["reach_error"] == 1) && q == 0) && c == a) && !(b == 0)) && \valid[0] == 0) && r == 0) && d == 1) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["reach_error"] == 12) && unknown-#memory_int-unknown["0"][1 + "0"] == 0) && #NULL == 0) && s == 1) && "reach_error" == 0) && unknown-#length-unknown["0"] == 2) && unknown-#memory_int-unknown["0"]["0"] == 48) && 0 == "0") && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && b == y) && \old(cond) == cond [2021-10-24 10:19:40,808 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((((((((((((unknown-#StackHeapBarrier-unknown < "reach_error" && \old(cond) == cond) && a == x) && k == 0) && x <= 1) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "egcd3-ll.c") && (if a == r * y + p * x then 1 else 0) == \old(cond)) && \valid["egcd3-ll.c"] == 1) && \valid["0"] == 1) && "egcd3-ll.c" == 0) && p == 1) && b == v) && unknown-#length-unknown["egcd3-ll.c"] == 11) && \valid["reach_error"] == 1) && 1 <= y) && q == 0) && c == a) && \valid[0] == 0) && r == 0) && d == 1) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["reach_error"] == 12) && unknown-#memory_int-unknown["0"][1 + "0"] == 0) && #NULL == 0) && s == 1) && 1 <= x) && "reach_error" == 0) && unknown-#length-unknown["0"] == 2) && unknown-#memory_int-unknown["0"]["0"] == 48) && y <= 1) && 0 == "0") && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && b == y) && \old(cond) == cond [2021-10-24 10:19:40,808 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((((((((((((unknown-#StackHeapBarrier-unknown < "reach_error" && \old(cond) == cond) && a == x) && k == 0) && x <= 1) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "egcd3-ll.c") && (if a == r * y + p * x then 1 else 0) == \old(cond)) && \valid["egcd3-ll.c"] == 1) && \valid["0"] == 1) && "egcd3-ll.c" == 0) && p == 1) && b == v) && unknown-#length-unknown["egcd3-ll.c"] == 11) && \valid["reach_error"] == 1) && 1 <= y) && q == 0) && c == a) && \valid[0] == 0) && r == 0) && d == 1) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["reach_error"] == 12) && unknown-#memory_int-unknown["0"][1 + "0"] == 0) && #NULL == 0) && s == 1) && 1 <= x) && "reach_error" == 0) && unknown-#length-unknown["0"] == 2) && unknown-#memory_int-unknown["0"]["0"] == 48) && y <= 1) && 0 == "0") && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && b == y) && \old(cond) == cond [2021-10-24 10:19:40,826 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:19:40,827 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:19:40,828 INFO L168 Benchmark]: Toolchain (without parser) took 19543.05 ms. Allocated memory was 92.3 MB in the beginning and 146.8 MB in the end (delta: 54.5 MB). Free memory was 62.1 MB in the beginning and 49.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 66.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:40,829 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 92.3 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:19:40,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.95 ms. Allocated memory is still 92.3 MB. Free memory was 61.9 MB in the beginning and 68.3 MB in the end (delta: -6.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:40,830 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.90 ms. Allocated memory is still 92.3 MB. Free memory was 68.3 MB in the beginning and 66.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:40,830 INFO L168 Benchmark]: Boogie Preprocessor took 37.70 ms. Allocated memory is still 92.3 MB. Free memory was 66.4 MB in the beginning and 65.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:40,831 INFO L168 Benchmark]: RCFGBuilder took 703.66 ms. Allocated memory is still 92.3 MB. Free memory was 65.3 MB in the beginning and 47.9 MB in the end (delta: 17.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:40,831 INFO L168 Benchmark]: TraceAbstraction took 18336.78 ms. Allocated memory was 92.3 MB in the beginning and 146.8 MB in the end (delta: 54.5 MB). Free memory was 47.6 MB in the beginning and 52.6 MB in the end (delta: -5.0 MB). Peak memory consumption was 71.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:40,832 INFO L168 Benchmark]: Witness Printer took 70.36 ms. Allocated memory is still 146.8 MB. Free memory was 52.6 MB in the beginning and 49.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:40,834 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 92.3 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 322.95 ms. Allocated memory is still 92.3 MB. Free memory was 61.9 MB in the beginning and 68.3 MB in the end (delta: -6.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.90 ms. Allocated memory is still 92.3 MB. Free memory was 68.3 MB in the beginning and 66.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.70 ms. Allocated memory is still 92.3 MB. Free memory was 66.4 MB in the beginning and 65.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 703.66 ms. Allocated memory is still 92.3 MB. Free memory was 65.3 MB in the beginning and 47.9 MB in the end (delta: 17.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 18336.78 ms. Allocated memory was 92.3 MB in the beginning and 146.8 MB in the end (delta: 54.5 MB). Free memory was 47.6 MB in the beginning and 52.6 MB in the end (delta: -5.0 MB). Peak memory consumption was 71.2 MB. Max. memory is 16.1 GB. * Witness Printer took 70.36 ms. Allocated memory is still 146.8 MB. Free memory was 52.6 MB in the beginning and 49.5 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 18165.5ms, OverallIterations: 8, TraceHistogramMax: 2, EmptinessCheckTime: 28.5ms, AutomataDifference: 1124.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 3355.5ms, InitialAbstractionConstructionTime: 15.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 159 SDtfs, 415 SDslu, 262 SDs, 0 SdLazy, 324 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 600.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 194 GetRequests, 120 SyntacticMatches, 15 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 5214.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=6, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 124.5ms AutomataMinimizationTime, 8 MinimizatonAttempts, 96 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 18 NumberOfFragments, 1036 HoareAnnotationTreeSize, 8 FomulaSimplifications, 752 FormulaSimplificationTreeSizeReduction, 293.2ms HoareSimplificationTime, 8 FomulaSimplificationsInter, 995 FormulaSimplificationTreeSizeReductionInter, 3053.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 76.0ms SsaConstructionTime, 225.3ms SatisfiabilityAnalysisTime, 5354.6ms InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 158 ConstructedInterpolants, 7 QuantifiedInterpolants, 2412 SizeOfPredicates, 49 NumberOfNonLiveVariables, 596 ConjunctsInSsa, 103 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 4/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 1610, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 20, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 58, TOOLS_POST_TIME[ms]: 716, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 58, TOOLS_QUANTIFIERELIM_TIME[ms]: 687, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 263, FLUID_QUERY_TIME[ms]: 10, FLUID_QUERIES: 89, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 5, DOMAIN_JOIN_TIME[ms]: 687, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 4, DOMAIN_ISSUBSETEQ_TIME[ms]: 21, DOMAIN_ISBOTTOM_APPLICATIONS: 20, DOMAIN_ISBOTTOM_TIME[ms]: 67, LOOP_SUMMARIZER_APPLICATIONS: 4, LOOP_SUMMARIZER_CACHE_MISSES: 4, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 518, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 517, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 4, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 5, PATH_EXPR_TIME[ms]: 5, REGEX_TO_DAG_TIME[ms]: 8, DAG_COMPRESSION_TIME[ms]: 47, DAG_COMPRESSION_PROCESSED_NODES: 509, DAG_COMPRESSION_RETAINED_NODES: 79, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((unknown-#StackHeapBarrier-unknown < "reach_error" && \old(cond) == cond) && a == x) && k == 0) && x <= 1) && 1 <= cond) && 0 <= b) && b <= c) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "egcd3-ll.c") && (if a == r * y + p * x then 1 else 0) == \old(cond)) && \valid["egcd3-ll.c"] == 1) && \valid["0"] == 1) && "egcd3-ll.c" == 0) && b == v) && unknown-#length-unknown["egcd3-ll.c"] == 11) && \valid["reach_error"] == 1) && q == 0) && c == a) && !(b == 0)) && \valid[0] == 0) && r == 0) && d == 1) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["reach_error"] == 12) && unknown-#memory_int-unknown["0"][1 + "0"] == 0) && #NULL == 0) && s == 1) && "reach_error" == 0) && unknown-#length-unknown["0"] == 2) && unknown-#memory_int-unknown["0"]["0"] == 48) && 0 == "0") && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && b == y) && \old(cond) == cond - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((0 <= "0" && a == x) && \old(cond) <= 1) && c < b) && 1 <= cond) && x <= 1) && 1 <= cond) && k <= 1) && \old(cond) == 1) && 0 <= "egcd3-ll.c") && "egcd3-ll.c" == 0) && cond <= 1) && p == 1) && 0 <= c) && b == v) && 1 <= k) && 1 <= \old(cond)) && q == 0) && 0 <= "reach_error") && r == 0) && d == 1) && #NULL == 0) && s == 1) && 1 <= x) && "reach_error" == 0) && cond <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && y <= 1) && 0 == "0") && #NULL == 0) && b == y) || ((((((((((((((((((((((((((0 <= "0" && 0 <= k) && 1 <= cond) && x <= 1) && \old(cond) == 1) && 0 <= "egcd3-ll.c") && "egcd3-ll.c" == 0) && p == 1) && 0 <= y) && 1 <= c) && k <= 0) && q == 0) && c == a) && 0 <= "reach_error") && !(b == 0)) && r == 0) && #NULL == 0) && s == 1) && 1 <= x) && "reach_error" == 0) && cond <= 1) && a <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && y <= 1) && 0 == "0") && #NULL == 0) && b == y) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((0 <= "0" && k == 0) && 1 <= cond) && x <= 1) && 0 <= b) && b <= c) && 0 <= "reach_error") && \old(cond) <= 1) && 0 <= "egcd3-ll.c") && p == 1) && #NULL <= 0) && 0 <= "egcd3-ll.c") && b == v) && "reach_error" <= 0) && q == 0) && c == a) && 0 <= "reach_error") && !(b == 0)) && r == 0) && d == 1) && 1 <= \old(cond)) && s == 1) && 1 <= x) && cond <= 1) && 0 <= #NULL) && a <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && "egcd3-ll.c" <= 0) && 0 == "0") && #NULL == 0) && b == y - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((unknown-#StackHeapBarrier-unknown < "reach_error" && \old(cond) == cond) && a == x) && k == 0) && x <= 1) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "egcd3-ll.c") && (if a == r * y + p * x then 1 else 0) == \old(cond)) && \valid["egcd3-ll.c"] == 1) && \valid["0"] == 1) && "egcd3-ll.c" == 0) && p == 1) && b == v) && unknown-#length-unknown["egcd3-ll.c"] == 11) && \valid["reach_error"] == 1) && 1 <= y) && q == 0) && c == a) && \valid[0] == 0) && r == 0) && d == 1) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["reach_error"] == 12) && unknown-#memory_int-unknown["0"][1 + "0"] == 0) && #NULL == 0) && s == 1) && 1 <= x) && "reach_error" == 0) && unknown-#length-unknown["0"] == 2) && unknown-#memory_int-unknown["0"]["0"] == 48) && y <= 1) && 0 == "0") && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && b == y) && \old(cond) == cond - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((((0 <= "0" && 1 <= a) && \old(cond) <= 1) && b == 0) && 1 <= cond) && x <= 1) && 1 <= cond) && temp == 0) && k <= 1) && \old(cond) == 1) && p == 0) && 0 <= "egcd3-ll.c") && "egcd3-ll.c" == 0) && cond <= 1) && 0 <= c) && 1 <= k) && 1 <= y) && 1 <= \old(cond)) && c <= 0) && 0 <= "reach_error") && v <= 1) && d == 1) && r == 1) && 1 <= v) && q == 1) && #NULL == 0) && 1 <= x) && "reach_error" == 0) && s + 1 <= 0) && cond <= 1) && a <= 1) && 0 <= s + 1) && 0 <= unknown-#StackHeapBarrier-unknown) && y <= 1) && 0 == "0") && #NULL == 0) || ((((((((((((((((((((((0 <= "0" && 1 <= a) && 1 <= cond) && x <= 1) && \old(cond) == 1) && 0 <= "egcd3-ll.c") && "egcd3-ll.c" == 0) && p == 1) && 1 <= y) && q == 0) && 0 <= "reach_error") && r == 0) && #NULL == 0) && s == 1) && 1 <= x) && "reach_error" == 0) && cond <= 1) && a <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && y <= 1) && 0 == "0") && #NULL == 0) && b == y) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((unknown-#StackHeapBarrier-unknown < "reach_error" && \old(cond) == cond) && a == x) && k == 0) && x <= 1) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "egcd3-ll.c") && (if a == r * y + p * x then 1 else 0) == \old(cond)) && \valid["egcd3-ll.c"] == 1) && \valid["0"] == 1) && "egcd3-ll.c" == 0) && p == 1) && b == v) && unknown-#length-unknown["egcd3-ll.c"] == 11) && \valid["reach_error"] == 1) && 1 <= y) && q == 0) && c == a) && \valid[0] == 0) && r == 0) && d == 1) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["reach_error"] == 12) && unknown-#memory_int-unknown["0"][1 + "0"] == 0) && #NULL == 0) && s == 1) && 1 <= x) && "reach_error" == 0) && unknown-#length-unknown["0"] == 2) && unknown-#memory_int-unknown["0"]["0"] == 48) && y <= 1) && 0 == "0") && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && b == y) && \old(cond) == cond - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((unknown-#StackHeapBarrier-unknown < "reach_error" && \old(cond) == cond) && a == x) && k == 0) && x <= 1) && 1 <= cond) && 0 <= b) && b <= c) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "egcd3-ll.c") && (if a == r * y + p * x then 1 else 0) == \old(cond)) && \valid["egcd3-ll.c"] == 1) && \valid["0"] == 1) && "egcd3-ll.c" == 0) && b == v) && unknown-#length-unknown["egcd3-ll.c"] == 11) && \valid["reach_error"] == 1) && q == 0) && c == a) && !(b == 0)) && \valid[0] == 0) && r == 0) && d == 1) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["reach_error"] == 12) && unknown-#memory_int-unknown["0"][1 + "0"] == 0) && #NULL == 0) && s == 1) && "reach_error" == 0) && unknown-#length-unknown["0"] == 2) && unknown-#memory_int-unknown["0"]["0"] == 48) && 0 == "0") && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && b == y) && \old(cond) == cond RESULT: Ultimate proved your program to be correct! [2021-10-24 10:19:40,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f406f38f-0bda-4dbe-af89-b9bfae01b940/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...