./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6835a6a52b399101fa57284de792210b11ef12afe0f3073436fba94237f48f05 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 04:05:50,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:05:50,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:05:50,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:05:50,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:05:50,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:05:50,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:05:50,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:05:50,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:05:50,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:05:50,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:05:50,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:05:50,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:05:50,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:05:50,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:05:50,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:05:50,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:05:50,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:05:50,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:05:50,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:05:50,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:05:50,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:05:50,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:05:50,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:05:50,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:05:50,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:05:50,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:05:50,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:05:50,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:05:50,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:05:50,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:05:50,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:05:50,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:05:50,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:05:50,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:05:50,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:05:50,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:05:50,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:05:50,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:05:50,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:05:50,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:05:50,969 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 04:05:51,012 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:05:51,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:05:51,017 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:05:51,018 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:05:51,018 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:05:51,019 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:05:51,019 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:05:51,019 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:05:51,019 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:05:51,020 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:05:51,021 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:05:51,021 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:05:51,021 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:05:51,021 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:05:51,022 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:05:51,022 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:05:51,022 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:05:51,022 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:05:51,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:05:51,023 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:05:51,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:05:51,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:05:51,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:05:51,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:05:51,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:05:51,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:05:51,025 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:05:51,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:05:51,025 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:05:51,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:05:51,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:05:51,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:05:51,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:05:51,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:05:51,027 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:05:51,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:05:51,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:05:51,027 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:05:51,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:05:51,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:05:51,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:05:51,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6835a6a52b399101fa57284de792210b11ef12afe0f3073436fba94237f48f05 [2022-11-03 04:05:51,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:05:51,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:05:51,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:05:51,389 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:05:51,389 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:05:51,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound1.c [2022-11-03 04:05:51,466 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/data/f9b536adf/902de7821c28494d91bb5d1ca09c20ca/FLAG4338c50c6 [2022-11-03 04:05:51,992 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:05:51,992 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound1.c [2022-11-03 04:05:52,000 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/data/f9b536adf/902de7821c28494d91bb5d1ca09c20ca/FLAG4338c50c6 [2022-11-03 04:05:52,338 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/data/f9b536adf/902de7821c28494d91bb5d1ca09c20ca [2022-11-03 04:05:52,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:05:52,342 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:05:52,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:05:52,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:05:52,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:05:52,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:05:52" (1/1) ... [2022-11-03 04:05:52,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@274b0a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:52, skipping insertion in model container [2022-11-03 04:05:52,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:05:52" (1/1) ... [2022-11-03 04:05:52,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:05:52,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:05:52,566 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound1.c[458,471] [2022-11-03 04:05:52,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:05:52,598 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:05:52,613 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound1.c[458,471] [2022-11-03 04:05:52,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:05:52,649 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:05:52,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:52 WrapperNode [2022-11-03 04:05:52,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:05:52,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:05:52,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:05:52,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:05:52,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:52" (1/1) ... [2022-11-03 04:05:52,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:52" (1/1) ... [2022-11-03 04:05:52,687 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2022-11-03 04:05:52,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:05:52,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:05:52,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:05:52,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:05:52,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:52" (1/1) ... [2022-11-03 04:05:52,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:52" (1/1) ... [2022-11-03 04:05:52,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:52" (1/1) ... [2022-11-03 04:05:52,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:52" (1/1) ... [2022-11-03 04:05:52,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:52" (1/1) ... [2022-11-03 04:05:52,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:52" (1/1) ... [2022-11-03 04:05:52,723 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:52" (1/1) ... [2022-11-03 04:05:52,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:52" (1/1) ... [2022-11-03 04:05:52,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:05:52,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:05:52,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:05:52,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:05:52,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:52" (1/1) ... [2022-11-03 04:05:52,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:05:52,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:05:52,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:05:52,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:05:52,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:05:52,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:05:52,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:05:52,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:05:52,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 04:05:52,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 04:05:52,868 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:05:52,870 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:05:53,059 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:05:53,085 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:05:53,085 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 04:05:53,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:05:53 BoogieIcfgContainer [2022-11-03 04:05:53,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:05:53,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:05:53,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:05:53,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:05:53,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:05:52" (1/3) ... [2022-11-03 04:05:53,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed9e9e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:05:53, skipping insertion in model container [2022-11-03 04:05:53,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:52" (2/3) ... [2022-11-03 04:05:53,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed9e9e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:05:53, skipping insertion in model container [2022-11-03 04:05:53,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:05:53" (3/3) ... [2022-11-03 04:05:53,098 INFO L112 eAbstractionObserver]: Analyzing ICFG ps3-ll_unwindbound1.c [2022-11-03 04:05:53,116 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:05:53,117 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:05:53,165 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:05:53,173 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@27a0113a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:05:53,173 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:05:53,177 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 04:05:53,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 04:05:53,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:53,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 04:05:53,186 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:53,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:53,191 INFO L85 PathProgramCache]: Analyzing trace with hash 2138246143, now seen corresponding path program 1 times [2022-11-03 04:05:53,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:05:53,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093784126] [2022-11-03 04:05:53,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:53,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:05:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:53,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:05:53,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093784126] [2022-11-03 04:05:53,346 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 04:05:53,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273850431] [2022-11-03 04:05:53,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:53,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:05:53,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:05:53,355 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:05:53,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 04:05:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:53,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 04:05:53,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:53,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:53,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:05:53,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273850431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:53,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:53,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:05:53,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401875311] [2022-11-03 04:05:53,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:53,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 04:05:53,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:05:53,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 04:05:53,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:05:53,580 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:05:53,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:53,629 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2022-11-03 04:05:53,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 04:05:53,633 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-03 04:05:53,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:53,650 INFO L225 Difference]: With dead ends: 27 [2022-11-03 04:05:53,654 INFO L226 Difference]: Without dead ends: 12 [2022-11-03 04:05:53,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:05:53,666 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:53,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:05:53,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-03 04:05:53,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-03 04:05:53,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 04:05:53,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-11-03 04:05:53,713 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2022-11-03 04:05:53,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:53,714 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-11-03 04:05:53,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:05:53,716 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-11-03 04:05:53,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 04:05:53,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:53,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:53,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:53,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-03 04:05:53,936 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:53,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:53,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1461620770, now seen corresponding path program 1 times [2022-11-03 04:05:53,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:05:53,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425745720] [2022-11-03 04:05:53,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:53,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:05:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:53,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:05:53,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425745720] [2022-11-03 04:05:53,998 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 04:05:53,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788829259] [2022-11-03 04:05:53,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:53,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:05:54,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:05:54,001 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:05:54,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 04:05:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:54,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:05:54,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:54,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:54,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:05:54,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788829259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:54,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:54,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:05:54,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325784921] [2022-11-03 04:05:54,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:54,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:05:54,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:05:54,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:05:54,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:05:54,140 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:05:54,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:54,173 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-11-03 04:05:54,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 04:05:54,173 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 04:05:54,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:54,174 INFO L225 Difference]: With dead ends: 21 [2022-11-03 04:05:54,174 INFO L226 Difference]: Without dead ends: 14 [2022-11-03 04:05:54,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:05:54,177 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:54,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:05:54,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-03 04:05:54,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-03 04:05:54,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 04:05:54,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-11-03 04:05:54,190 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2022-11-03 04:05:54,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:54,191 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-11-03 04:05:54,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:05:54,192 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-11-03 04:05:54,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 04:05:54,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:54,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:54,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:54,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:05:54,410 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:54,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:54,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1463408230, now seen corresponding path program 1 times [2022-11-03 04:05:54,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:05:54,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268509266] [2022-11-03 04:05:54,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:54,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:05:54,428 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 04:05:54,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1734971793] [2022-11-03 04:05:54,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:54,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:05:54,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:05:54,493 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:05:54,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 04:05:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:54,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 04:05:54,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:54,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:54,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:05:54,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:05:54,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268509266] [2022-11-03 04:05:54,625 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 04:05:54,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734971793] [2022-11-03 04:05:54,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734971793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:54,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:54,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:05:54,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178001494] [2022-11-03 04:05:54,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:54,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:05:54,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:05:54,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:05:54,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:05:54,629 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:05:54,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:54,708 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-11-03 04:05:54,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:05:54,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 04:05:54,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:54,710 INFO L225 Difference]: With dead ends: 23 [2022-11-03 04:05:54,710 INFO L226 Difference]: Without dead ends: 20 [2022-11-03 04:05:54,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:05:54,712 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:54,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 34 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:05:54,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-03 04:05:54,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-03 04:05:54,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 04:05:54,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-11-03 04:05:54,718 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 7 [2022-11-03 04:05:54,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:54,719 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-11-03 04:05:54,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:05:54,719 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-11-03 04:05:54,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 04:05:54,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:54,720 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:54,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:54,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:05:54,940 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:54,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:54,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1726160663, now seen corresponding path program 1 times [2022-11-03 04:05:54,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:05:54,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229496232] [2022-11-03 04:05:54,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:54,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:05:54,951 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 04:05:54,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1415735518] [2022-11-03 04:05:54,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:54,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:05:54,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:05:54,955 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:05:54,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 04:05:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:55,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 04:05:55,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:55,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:05:55,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 04:05:55,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:05:55,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229496232] [2022-11-03 04:05:55,234 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 04:05:55,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415735518] [2022-11-03 04:05:55,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415735518] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 04:05:55,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:05:55,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-11-03 04:05:55,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189149949] [2022-11-03 04:05:55,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:55,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:05:55,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:05:55,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:05:55,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:05:55,237 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 04:05:55,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:55,270 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-11-03 04:05:55,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:05:55,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-03 04:05:55,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:55,272 INFO L225 Difference]: With dead ends: 20 [2022-11-03 04:05:55,272 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 04:05:55,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:05:55,273 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 6 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:55,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 16 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:05:55,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 04:05:55,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 04:05:55,275 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) [2022-11-03 04:05:55,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 04:05:55,276 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2022-11-03 04:05:55,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:55,276 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 04:05:55,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 04:05:55,276 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 04:05:55,277 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 04:05:55,279 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 04:05:55,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:55,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:05:55,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 04:05:55,523 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 04:05:55,523 INFO L899 garLoopResultBuilder]: For program point L27-1(lines 27 36) no Hoare annotation was computed. [2022-11-03 04:05:55,523 INFO L895 garLoopResultBuilder]: At program point L27-3(lines 27 36) the Hoare annotation is: (= (* 6 |ULTIMATE.start_main_~x~0#1|) (+ (* 3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~y~0#1|)) [2022-11-03 04:05:55,523 INFO L895 garLoopResultBuilder]: At program point L27-4(lines 27 36) the Hoare annotation is: (= (* 6 |ULTIMATE.start_main_~x~0#1|) (+ (* 3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~y~0#1|)) [2022-11-03 04:05:55,524 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-03 04:05:55,524 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (= (* 6 |ULTIMATE.start_main_~x~0#1|) (+ (* 3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~y~0#1|)) [2022-11-03 04:05:55,524 INFO L899 garLoopResultBuilder]: For program point L28-1(lines 27 36) no Hoare annotation was computed. [2022-11-03 04:05:55,524 INFO L902 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: true [2022-11-03 04:05:55,524 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2022-11-03 04:05:55,525 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2022-11-03 04:05:55,525 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2022-11-03 04:05:55,525 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2022-11-03 04:05:55,525 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2022-11-03 04:05:55,525 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2022-11-03 04:05:55,529 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-03 04:05:55,531 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 04:05:55,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:05:55 BoogieIcfgContainer [2022-11-03 04:05:55,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 04:05:55,545 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 04:05:55,546 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 04:05:55,546 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 04:05:55,546 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:05:53" (3/4) ... [2022-11-03 04:05:55,549 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 04:05:55,555 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-03 04:05:55,559 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-03 04:05:55,559 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-03 04:05:55,559 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-03 04:05:55,560 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 04:05:55,591 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 04:05:55,591 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 04:05:55,592 INFO L158 Benchmark]: Toolchain (without parser) took 3249.98ms. Allocated memory is still 117.4MB. Free memory was 77.8MB in the beginning and 58.0MB in the end (delta: 19.8MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2022-11-03 04:05:55,592 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 117.4MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:05:55,593 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.54ms. Allocated memory is still 117.4MB. Free memory was 77.6MB in the beginning and 93.2MB in the end (delta: -15.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 04:05:55,593 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.19ms. Allocated memory is still 117.4MB. Free memory was 93.2MB in the beginning and 91.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:05:55,594 INFO L158 Benchmark]: Boogie Preprocessor took 36.15ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 90.9MB in the end (delta: 724.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:05:55,594 INFO L158 Benchmark]: RCFGBuilder took 361.82ms. Allocated memory is still 117.4MB. Free memory was 90.4MB in the beginning and 80.4MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 04:05:55,595 INFO L158 Benchmark]: TraceAbstraction took 2454.51ms. Allocated memory is still 117.4MB. Free memory was 79.5MB in the beginning and 60.1MB in the end (delta: 19.4MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2022-11-03 04:05:55,595 INFO L158 Benchmark]: Witness Printer took 46.05ms. Allocated memory is still 117.4MB. Free memory was 60.1MB in the beginning and 58.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:05:55,597 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 117.4MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 306.54ms. Allocated memory is still 117.4MB. Free memory was 77.6MB in the beginning and 93.2MB in the end (delta: -15.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.19ms. Allocated memory is still 117.4MB. Free memory was 93.2MB in the beginning and 91.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.15ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 90.9MB in the end (delta: 724.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 361.82ms. Allocated memory is still 117.4MB. Free memory was 90.4MB in the beginning and 80.4MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2454.51ms. Allocated memory is still 117.4MB. Free memory was 79.5MB in the beginning and 60.1MB in the end (delta: 19.4MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. * Witness Printer took 46.05ms. Allocated memory is still 117.4MB. Free memory was 60.1MB in the beginning and 58.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 96 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 58 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52 IncrementalHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 42 mSDtfsCounter, 52 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, InterpolantAutomatonStates: 16, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 11 PreInvPairs, 18 NumberOfFragments, 53 HoareAnnotationTreeSize, 11 FomulaSimplifications, 53 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 239 SizeOfPredicates, 2 NumberOfNonLiveVariables, 213 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 6/8 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 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 6 * x == 3 * (y * y) + y * y * y * 2 + y - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-03 04:05:55,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_345c9a6d-495d-41ad-84c7-857ec6301b73/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE