./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 079768eb2ce141267a1411f9330cb4d0cef674bf78865555f3130b47379d643a ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:36:21,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:36:21,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:36:21,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:36:21,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:36:21,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:36:21,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:36:21,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:36:21,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:36:21,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:36:21,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:36:21,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:36:21,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:36:21,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:36:21,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:36:21,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:36:21,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:36:21,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:36:21,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:36:21,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:36:21,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:36:21,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:36:21,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:36:21,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:36:21,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:36:21,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:36:21,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:36:21,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:36:21,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:36:21,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:36:21,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:36:21,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:36:21,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:36:21,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:36:21,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:36:21,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:36:21,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:36:21,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:36:21,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:36:21,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:36:21,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:36:21,961 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:36:21,988 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:36:21,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:36:21,990 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:36:21,990 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:36:21,991 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:36:21,991 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:36:21,991 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:36:21,992 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:36:21,992 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:36:21,993 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:36:21,993 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:36:21,993 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:36:21,994 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:36:21,994 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:36:21,995 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:36:21,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:36:21,996 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:36:21,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:36:21,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:36:21,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:36:21,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:36:21,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:36:21,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:36:21,998 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:36:21,998 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:36:21,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:36:21,999 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:36:21,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:36:21,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:36:21,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:36:22,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:36:22,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:36:22,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:36:22,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:36:22,001 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:36:22,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:36:22,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:36:22,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:36:22,002 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:36:22,002 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_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 079768eb2ce141267a1411f9330cb4d0cef674bf78865555f3130b47379d643a [2021-10-29 04:36:22,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:36:22,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:36:22,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:36:22,268 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:36:22,269 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:36:22,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c [2021-10-29 04:36:22,351 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/data/f8b369d96/4575668b550046cdb91d0b6bb3f00e79/FLAG5468c4b80 [2021-10-29 04:36:22,897 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:36:22,897 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c [2021-10-29 04:36:22,913 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/data/f8b369d96/4575668b550046cdb91d0b6bb3f00e79/FLAG5468c4b80 [2021-10-29 04:36:23,300 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/data/f8b369d96/4575668b550046cdb91d0b6bb3f00e79 [2021-10-29 04:36:23,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:36:23,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:36:23,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:36:23,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:36:23,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:36:23,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:36:23" (1/1) ... [2021-10-29 04:36:23,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34bf612e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:23, skipping insertion in model container [2021-10-29 04:36:23,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:36:23" (1/1) ... [2021-10-29 04:36:23,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:36:23,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:36:23,499 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_2282e425-4daa-41a1-a4ab-48d2118d8c74/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c[576,589] [2021-10-29 04:36:23,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:36:23,527 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:36:23,540 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_2282e425-4daa-41a1-a4ab-48d2118d8c74/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c[576,589] [2021-10-29 04:36:23,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:36:23,562 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:36:23,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:23 WrapperNode [2021-10-29 04:36:23,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:36:23,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:36:23,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:36:23,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:36:23,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:23" (1/1) ... [2021-10-29 04:36:23,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:23" (1/1) ... [2021-10-29 04:36:23,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:36:23,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:36:23,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:36:23,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:36:23,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:23" (1/1) ... [2021-10-29 04:36:23,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:23" (1/1) ... [2021-10-29 04:36:23,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:23" (1/1) ... [2021-10-29 04:36:23,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:23" (1/1) ... [2021-10-29 04:36:23,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:23" (1/1) ... [2021-10-29 04:36:23,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:23" (1/1) ... [2021-10-29 04:36:23,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:23" (1/1) ... [2021-10-29 04:36:23,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:36:23,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:36:23,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:36:23,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:36:23,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:23" (1/1) ... [2021-10-29 04:36:23,662 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:36:23,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:36:23,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:36:23,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:36:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:36:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:36:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:36:23,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:36:24,077 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:36:24,077 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-29 04:36:24,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:36:24 BoogieIcfgContainer [2021-10-29 04:36:24,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:36:24,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:36:24,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:36:24,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:36:24,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:36:23" (1/3) ... [2021-10-29 04:36:24,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea6b3ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:36:24, skipping insertion in model container [2021-10-29 04:36:24,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:23" (2/3) ... [2021-10-29 04:36:24,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea6b3ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:36:24, skipping insertion in model container [2021-10-29 04:36:24,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:36:24" (3/3) ... [2021-10-29 04:36:24,104 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound1.c [2021-10-29 04:36:24,110 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:36:24,110 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-29 04:36:24,168 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:36:24,178 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 04:36:24,179 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-29 04:36:24,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 35 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) [2021-10-29 04:36:24,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 04:36:24,197 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:36:24,197 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 04:36:24,198 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 04:36:24,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:36:24,204 INFO L85 PathProgramCache]: Analyzing trace with hash 152967942, now seen corresponding path program 1 times [2021-10-29 04:36:24,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:36:24,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863601183] [2021-10-29 04:36:24,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:36:24,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:36:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:36:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:36:24,367 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:36:24,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863601183] [2021-10-29 04:36:24,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863601183] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:36:24,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:36:24,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:36:24,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941821661] [2021-10-29 04:36:24,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 04:36:24,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:36:24,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 04:36:24,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:36:24,392 INFO L87 Difference]: Start difference. First operand has 36 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 35 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) 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) [2021-10-29 04:36:24,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:36:24,409 INFO L93 Difference]: Finished difference Result 71 states and 95 transitions. [2021-10-29 04:36:24,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 04:36:24,411 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 [2021-10-29 04:36:24,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:36:24,419 INFO L225 Difference]: With dead ends: 71 [2021-10-29 04:36:24,420 INFO L226 Difference]: Without dead ends: 34 [2021-10-29 04:36:24,422 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:36:24,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-29 04:36:24,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-29 04:36:24,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 33 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:36:24,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2021-10-29 04:36:24,456 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 5 [2021-10-29 04:36:24,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:36:24,456 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2021-10-29 04:36:24,457 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) [2021-10-29 04:36:24,457 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2021-10-29 04:36:24,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 04:36:24,458 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:36:24,458 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 04:36:24,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 04:36:24,477 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 04:36:24,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:36:24,478 INFO L85 PathProgramCache]: Analyzing trace with hash 150046441, now seen corresponding path program 1 times [2021-10-29 04:36:24,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:36:24,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524490913] [2021-10-29 04:36:24,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:36:24,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:36:24,547 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 04:36:24,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [630568676] [2021-10-29 04:36:24,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:36:24,548 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:36:24,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:36:24,564 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:36:24,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 04:36:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:36:24,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-29 04:36:24,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:36:24,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:36:24,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:36:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:36:24,912 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:36:24,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524490913] [2021-10-29 04:36:24,912 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:36:24,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630568676] [2021-10-29 04:36:24,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630568676] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:36:24,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:36:24,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 04:36:24,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204981410] [2021-10-29 04:36:24,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:36:24,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:36:24,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:36:24,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:36:24,917 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:36:25,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:36:25,022 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-10-29 04:36:25,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 04:36:25,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-29 04:36:25,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:36:25,024 INFO L225 Difference]: With dead ends: 52 [2021-10-29 04:36:25,024 INFO L226 Difference]: Without dead ends: 46 [2021-10-29 04:36:25,025 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:36:25,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-29 04:36:25,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 28. [2021-10-29 04:36:25,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:36:25,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-10-29 04:36:25,032 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 5 [2021-10-29 04:36:25,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:36:25,032 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-10-29 04:36:25,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:36:25,033 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-10-29 04:36:25,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 04:36:25,033 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:36:25,034 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 04:36:25,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 04:36:25,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:36:25,260 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 04:36:25,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:36:25,260 INFO L85 PathProgramCache]: Analyzing trace with hash 356501228, now seen corresponding path program 1 times [2021-10-29 04:36:25,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:36:25,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240062683] [2021-10-29 04:36:25,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:36:25,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:36:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:36:25,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:36:25,352 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:36:25,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240062683] [2021-10-29 04:36:25,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240062683] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:36:25,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:36:25,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:36:25,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759054951] [2021-10-29 04:36:25,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:36:25,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:36:25,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:36:25,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:36:25,359 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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) [2021-10-29 04:36:25,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:36:25,389 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-10-29 04:36:25,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:36:25,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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 [2021-10-29 04:36:25,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:36:25,395 INFO L225 Difference]: With dead ends: 34 [2021-10-29 04:36:25,396 INFO L226 Difference]: Without dead ends: 30 [2021-10-29 04:36:25,397 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:36:25,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-29 04:36:25,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-29 04:36:25,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:36:25,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-10-29 04:36:25,410 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 6 [2021-10-29 04:36:25,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:36:25,410 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-10-29 04:36:25,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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) [2021-10-29 04:36:25,412 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-10-29 04:36:25,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 04:36:25,413 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:36:25,413 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:36:25,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 04:36:25,418 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 04:36:25,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:36:25,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1834102484, now seen corresponding path program 1 times [2021-10-29 04:36:25,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:36:25,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077573493] [2021-10-29 04:36:25,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:36:25,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:36:25,447 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 04:36:25,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1559890163] [2021-10-29 04:36:25,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:36:25,448 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:36:25,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:36:25,450 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:36:25,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 04:36:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:36:25,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-29 04:36:25,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:36:25,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:36:25,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:36:25,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:36:25,704 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:36:25,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077573493] [2021-10-29 04:36:25,704 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:36:25,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559890163] [2021-10-29 04:36:25,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559890163] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:36:25,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:36:25,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 04:36:25,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025191981] [2021-10-29 04:36:25,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:36:25,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:36:25,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:36:25,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:36:25,707 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:36:25,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:36:25,784 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2021-10-29 04:36:25,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:36:25,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-29 04:36:25,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:36:25,785 INFO L225 Difference]: With dead ends: 61 [2021-10-29 04:36:25,786 INFO L226 Difference]: Without dead ends: 53 [2021-10-29 04:36:25,786 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-29 04:36:25,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-29 04:36:25,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2021-10-29 04:36:25,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.25) 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) [2021-10-29 04:36:25,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2021-10-29 04:36:25,794 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 7 [2021-10-29 04:36:25,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:36:25,795 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2021-10-29 04:36:25,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:36:25,795 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2021-10-29 04:36:25,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 04:36:25,796 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:36:25,796 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:36:25,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 04:36:26,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:36:26,012 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 04:36:26,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:36:26,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1966454167, now seen corresponding path program 1 times [2021-10-29 04:36:26,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:36:26,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696173198] [2021-10-29 04:36:26,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:36:26,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:36:26,024 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 04:36:26,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334895599] [2021-10-29 04:36:26,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:36:26,025 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:36:26,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:36:26,026 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:36:26,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 04:36:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:36:26,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-29 04:36:26,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:36:26,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:36:26,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:36:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:36:26,484 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:36:26,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696173198] [2021-10-29 04:36:26,487 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:36:26,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334895599] [2021-10-29 04:36:26,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334895599] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:36:26,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [521214937] [2021-10-29 04:36:26,512 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-10-29 04:36:26,513 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:36:26,521 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:36:26,535 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:36:26,538 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:36:26,590 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:26,594 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:36:26,594 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:26,595 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 04:36:26,601 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:36:26,602 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:26,603 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 04:36:26,609 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-10-29 04:36:26,640 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-10-29 04:36:26,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:36:26,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:36:26,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:36:26,694 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 [2021-10-29 04:36:26,695 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:26,696 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:36:26,697 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:26,698 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:36:26,698 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 04:36:26,714 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 04:36:26,715 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:26,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 04:36:26,716 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:26,716 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 04:36:26,716 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 04:36:26,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:26,765 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:26,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:36:26,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:36:26,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:36:26,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:36:26,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:36:26,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:36:26,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:36:26,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:36:26,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:36:26,791 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 [2021-10-29 04:36:26,792 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:26,794 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 04:36:26,795 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:26,796 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 04:36:26,796 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 04:36:26,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:26,810 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:26,816 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.3 percent of original size [2021-10-29 04:36:26,820 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-10-29 04:36:26,824 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 04:36:26,825 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:322, output treesize:130 [2021-10-29 04:36:26,832 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:26,837 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-10-29 04:36:26,844 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-10-29 04:36:26,849 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 155 [2021-10-29 04:36:26,855 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:26,863 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-10-29 04:36:26,871 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:26,880 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-10-29 04:36:26,889 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:26,897 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-10-29 04:36:26,907 INFO L180 QuantifierPusher]: treesize reduction 4, result has 97.7 percent of original size [2021-10-29 04:36:26,919 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-10-29 04:36:26,930 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:26,943 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-10-29 04:36:26,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:27,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:27,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:27,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:27,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:27,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:27,074 INFO L180 QuantifierPusher]: treesize reduction 36, result has 69.0 percent of original size [2021-10-29 04:36:27,079 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-10-29 04:36:27,085 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,094 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-29 04:36:27,100 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,119 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-10-29 04:36:27,124 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,134 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:36:27,135 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,136 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:36:27,139 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-10-29 04:36:27,151 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,159 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:36:27,160 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,161 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:36:27,167 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-10-29 04:36:27,181 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,185 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:36:27,190 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,193 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:36:27,194 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,195 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:36:27,199 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:36:27,200 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,201 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:36:27,206 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 220 [2021-10-29 04:36:27,227 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:36:27,228 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:36:27,232 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:36:27,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,236 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:36:27,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-10-29 04:36:27,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,266 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:36:27,267 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,268 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:36:27,271 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:36:27,271 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,273 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:36:27,278 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 230 [2021-10-29 04:36:27,292 INFO L180 QuantifierPusher]: treesize reduction 36, result has 69.0 percent of original size [2021-10-29 04:36:27,295 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-10-29 04:36:27,298 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,301 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-29 04:36:27,308 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,313 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-10-29 04:36:27,319 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,325 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:36:27,326 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,326 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:36:27,330 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-10-29 04:36:27,348 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,357 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:36:27,357 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:36:27,368 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-10-29 04:36:27,383 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,385 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:36:27,391 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,395 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:36:27,398 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,398 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:36:27,401 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:36:27,402 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:36:27,407 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 220 [2021-10-29 04:36:27,422 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:36:27,423 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,424 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:36:27,429 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:36:27,430 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:27,431 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:36:27,435 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-10-29 04:36:27,444 INFO L180 QuantifierPusher]: treesize reduction 4, result has 95.1 percent of original size [2021-10-29 04:36:27,446 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-29 04:36:27,460 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:36:28,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:36:28,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 04:36:28,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-10-29 04:36:28,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795365782] [2021-10-29 04:36:28,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 04:36:28,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:36:28,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 04:36:28,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-29 04:36:28,665 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 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) [2021-10-29 04:36:29,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:36:29,050 INFO L93 Difference]: Finished difference Result 91 states and 106 transitions. [2021-10-29 04:36:29,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 04:36:29,051 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 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 15 [2021-10-29 04:36:29,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:36:29,052 INFO L225 Difference]: With dead ends: 91 [2021-10-29 04:36:29,052 INFO L226 Difference]: Without dead ends: 79 [2021-10-29 04:36:29,053 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2021-10-29 04:36:29,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-29 04:36:29,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 20. [2021-10-29 04:36:29,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 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) [2021-10-29 04:36:29,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-10-29 04:36:29,059 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 15 [2021-10-29 04:36:29,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:36:29,060 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-10-29 04:36:29,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 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) [2021-10-29 04:36:29,060 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-10-29 04:36:29,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 04:36:29,060 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:36:29,060 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:36:29,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 04:36:29,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:36:29,275 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 04:36:29,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:36:29,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1763500994, now seen corresponding path program 1 times [2021-10-29 04:36:29,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:36:29,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402430573] [2021-10-29 04:36:29,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:36:29,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:36:29,286 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 04:36:29,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [960386695] [2021-10-29 04:36:29,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:36:29,287 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:36:29,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:36:29,294 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:36:29,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-29 04:36:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:36:29,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 04:36:29,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:36:29,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:36:29,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:36:29,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:36:29,495 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:36:29,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402430573] [2021-10-29 04:36:29,495 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:36:29,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960386695] [2021-10-29 04:36:29,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960386695] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:36:29,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:36:29,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 04:36:29,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409186151] [2021-10-29 04:36:29,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:36:29,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:36:29,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:36:29,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:36:29,498 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:36:29,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:36:29,515 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-10-29 04:36:29,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:36:29,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-29 04:36:29,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:36:29,520 INFO L225 Difference]: With dead ends: 30 [2021-10-29 04:36:29,520 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 04:36:29,521 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-29 04:36:29,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 04:36:29,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 04:36:29,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:36:29,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 04:36:29,522 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-29 04:36:29,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:36:29,522 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 04:36:29,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:36:29,522 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 04:36:29,522 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 04:36:29,525 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:36:29,525 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:36:29,525 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:36:29,525 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:36:29,526 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:36:29,526 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:36:29,526 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:36:29,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-29 04:36:29,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:36:29,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 04:36:29,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:29,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:29,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:29,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:29,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:29,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:29,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:29,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:29,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:30,115 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 04:36:30,116 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 04:36:30,116 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 04:36:30,116 INFO L857 garLoopResultBuilder]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2021-10-29 04:36:30,116 INFO L853 garLoopResultBuilder]: At program point L37-3(lines 37 61) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (and (<= 0 ~counter~0) (= ULTIMATE.start_main_~b~0 .cse0) (= (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0) .cse0) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) [2021-10-29 04:36:30,116 INFO L857 garLoopResultBuilder]: For program point L37-4(lines 37 61) no Hoare annotation was computed. [2021-10-29 04:36:30,116 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 04:36:30,116 INFO L857 garLoopResultBuilder]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2021-10-29 04:36:30,116 INFO L853 garLoopResultBuilder]: At program point L46-3(lines 46 58) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ~counter~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse0)) (= (+ ULTIMATE.start_main_~r~0 .cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) [2021-10-29 04:36:30,117 INFO L857 garLoopResultBuilder]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2021-10-29 04:36:30,117 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 04:36:30,117 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 04:36:30,117 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-10-29 04:36:30,117 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ~counter~0) (= ULTIMATE.start_main_~b~0 .cse0) (= (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0) .cse0) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) [2021-10-29 04:36:30,117 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-10-29 04:36:30,117 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 41 42) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ~counter~0) (= ULTIMATE.start_main_~b~0 .cse0) (= (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0) .cse0) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) [2021-10-29 04:36:30,117 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-10-29 04:36:30,117 INFO L853 garLoopResultBuilder]: At program point L15-8(lines 14 20) the Hoare annotation is: false [2021-10-29 04:36:30,118 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-10-29 04:36:30,118 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: false [2021-10-29 04:36:30,118 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-10-29 04:36:30,118 INFO L853 garLoopResultBuilder]: At program point L15-14(lines 51 52) the Hoare annotation is: false [2021-10-29 04:36:30,118 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-10-29 04:36:30,118 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: false [2021-10-29 04:36:30,118 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-10-29 04:36:30,118 INFO L860 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-10-29 04:36:30,118 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 04:36:30,118 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-10-29 04:36:30,119 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-10-29 04:36:30,119 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-10-29 04:36:30,119 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-10-29 04:36:30,119 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-10-29 04:36:30,119 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-10-29 04:36:30,119 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-10-29 04:36:30,119 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 04:36:30,119 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 04:36:30,122 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-10-29 04:36:30,124 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:36:30,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:36:30 BoogieIcfgContainer [2021-10-29 04:36:30,139 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:36:30,139 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:36:30,139 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:36:30,140 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:36:30,140 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:36:24" (3/4) ... [2021-10-29 04:36:30,143 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 04:36:30,153 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-29 04:36:30,153 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-29 04:36:30,153 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-29 04:36:30,154 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 04:36:30,190 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:36:30,190 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:36:30,191 INFO L168 Benchmark]: Toolchain (without parser) took 6886.35 ms. Allocated memory was 88.1 MB in the beginning and 136.3 MB in the end (delta: 48.2 MB). Free memory was 59.0 MB in the beginning and 99.4 MB in the end (delta: -40.4 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:36:30,192 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory is still 45.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:36:30,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.15 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 58.8 MB in the beginning and 89.2 MB in the end (delta: -30.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:36:30,193 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.70 ms. Allocated memory is still 113.2 MB. Free memory was 89.2 MB in the beginning and 87.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:36:30,193 INFO L168 Benchmark]: Boogie Preprocessor took 41.89 ms. Allocated memory is still 113.2 MB. Free memory was 87.4 MB in the beginning and 86.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:36:30,193 INFO L168 Benchmark]: RCFGBuilder took 450.20 ms. Allocated memory is still 113.2 MB. Free memory was 86.3 MB in the beginning and 73.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 04:36:30,194 INFO L168 Benchmark]: TraceAbstraction took 6041.76 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 72.9 MB in the beginning and 102.5 MB in the end (delta: -29.6 MB). Peak memory consumption was 50.0 MB. Max. memory is 16.1 GB. [2021-10-29 04:36:30,194 INFO L168 Benchmark]: Witness Printer took 51.14 ms. Allocated memory is still 136.3 MB. Free memory was 102.5 MB in the beginning and 99.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 04:36:30,196 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory is still 45.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 257.15 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 58.8 MB in the beginning and 89.2 MB in the end (delta: -30.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.70 ms. Allocated memory is still 113.2 MB. Free memory was 89.2 MB in the beginning and 87.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.89 ms. Allocated memory is still 113.2 MB. Free memory was 87.4 MB in the beginning and 86.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 450.20 ms. Allocated memory is still 113.2 MB. Free memory was 86.3 MB in the beginning and 73.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6041.76 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 72.9 MB in the beginning and 102.5 MB in the end (delta: -29.6 MB). Peak memory consumption was 50.0 MB. Max. memory is 16.1 GB. * Witness Printer took 51.14 ms. Allocated memory is still 136.3 MB. Free memory was 102.5 MB in the beginning and 99.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: 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, 36 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 5.9s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 130 SDtfs, 217 SDslu, 168 SDs, 0 SdLazy, 219 SolverSat, 120 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 63 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=4, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 86 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 15 NumberOfFragments, 100 HoareAnnotationTreeSize, 9 FomulaSimplifications, 643 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 576 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 420 SizeOfPredicates, 22 NumberOfNonLiveVariables, 312 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((1 <= cond && 1 <= counter) && x == r + q * y) && r + q * y + a * y == b + x - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((1 <= cond && 1 <= counter) && b == a * y) && r + q * y + a * y == b + x - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (0 <= counter && b == a * y) && r + q * y + a * y == b + x - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((1 <= cond && 1 <= counter) && b == a * y) && r + q * y + a * y == b + x RESULT: Ultimate proved your program to be correct! [2021-10-29 04:36:30,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2282e425-4daa-41a1-a4ab-48d2118d8c74/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...