./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh --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 53086523abe0dc699ccd28b0916f17f8825d4641577f06835b9d81e9579a444f --- 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-2329fc7 [2022-12-14 13:02:57,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:02:57,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:02:57,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:02:57,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:02:57,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:02:57,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:02:57,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:02:57,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:02:57,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:02:57,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:02:57,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:02:57,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:02:57,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:02:57,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:02:57,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:02:57,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:02:57,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:02:57,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:02:57,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:02:57,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:02:57,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:02:57,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:02:57,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:02:57,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:02:57,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:02:57,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:02:57,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:02:57,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:02:57,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:02:57,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:02:57,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:02:57,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:02:57,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:02:57,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:02:57,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:02:57,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:02:57,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:02:57,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:02:57,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:02:57,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:02:57,771 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 13:02:57,785 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:02:57,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:02:57,786 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:02:57,786 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:02:57,786 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:02:57,786 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:02:57,786 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:02:57,787 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:02:57,787 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:02:57,787 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:02:57,787 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:02:57,787 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:02:57,787 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:02:57,787 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:02:57,787 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:02:57,788 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:02:57,788 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:02:57,788 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:02:57,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:02:57,788 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:02:57,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:02:57,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:02:57,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:02:57,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:02:57,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:02:57,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:02:57,789 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:02:57,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:02:57,789 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:02:57,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:02:57,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:02:57,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:02:57,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:02:57,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:02:57,790 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:02:57,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:02:57,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:02:57,790 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:02:57,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:02:57,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:02:57,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:02:57,791 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_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53086523abe0dc699ccd28b0916f17f8825d4641577f06835b9d81e9579a444f [2022-12-14 13:02:57,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:02:57,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:02:57,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:02:57,969 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:02:57,969 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:02:57,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c [2022-12-14 13:03:00,491 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:03:00,661 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:03:00,661 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c [2022-12-14 13:03:00,667 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/data/99dfe2fa4/b0ed1fd4dc994105b230a64e993c95f1/FLAG326bea673 [2022-12-14 13:03:01,053 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/data/99dfe2fa4/b0ed1fd4dc994105b230a64e993c95f1 [2022-12-14 13:03:01,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:03:01,057 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:03:01,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:03:01,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:03:01,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:03:01,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:03:01" (1/1) ... [2022-12-14 13:03:01,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67913737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:01, skipping insertion in model container [2022-12-14 13:03:01,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:03:01" (1/1) ... [2022-12-14 13:03:01,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:03:01,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:03:01,198 WARN L237 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_78e6f923-e5c3-43f6-9f3c-f21da9975476/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c[458,471] [2022-12-14 13:03:01,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:03:01,216 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:03:01,225 WARN L237 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_78e6f923-e5c3-43f6-9f3c-f21da9975476/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c[458,471] [2022-12-14 13:03:01,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:03:01,239 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:03:01,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:01 WrapperNode [2022-12-14 13:03:01,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:03:01,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:03:01,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:03:01,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:03:01,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:01" (1/1) ... [2022-12-14 13:03:01,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:01" (1/1) ... [2022-12-14 13:03:01,264 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2022-12-14 13:03:01,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:03:01,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:03:01,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:03:01,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:03:01,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:01" (1/1) ... [2022-12-14 13:03:01,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:01" (1/1) ... [2022-12-14 13:03:01,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:01" (1/1) ... [2022-12-14 13:03:01,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:01" (1/1) ... [2022-12-14 13:03:01,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:01" (1/1) ... [2022-12-14 13:03:01,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:01" (1/1) ... [2022-12-14 13:03:01,277 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:01" (1/1) ... [2022-12-14 13:03:01,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:01" (1/1) ... [2022-12-14 13:03:01,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:03:01,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:03:01,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:03:01,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:03:01,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:01" (1/1) ... [2022-12-14 13:03:01,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:03:01,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:03:01,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:03:01,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:03:01,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:03:01,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:03:01,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:03:01,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:03:01,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 13:03:01,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 13:03:01,398 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:03:01,399 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:03:01,489 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:03:01,512 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:03:01,512 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 13:03:01,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:03:01 BoogieIcfgContainer [2022-12-14 13:03:01,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:03:01,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:03:01,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:03:01,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:03:01,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:03:01" (1/3) ... [2022-12-14 13:03:01,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f25f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:03:01, skipping insertion in model container [2022-12-14 13:03:01,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:01" (2/3) ... [2022-12-14 13:03:01,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f25f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:03:01, skipping insertion in model container [2022-12-14 13:03:01,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:03:01" (3/3) ... [2022-12-14 13:03:01,521 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound10.c [2022-12-14 13:03:01,537 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:03:01,537 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:03:01,576 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:03:01,581 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;@27b5e934, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:03:01,581 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:03:01,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 13:03:01,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 13:03:01,590 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:03:01,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 13:03:01,591 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:03:01,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:03:01,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1757604175, now seen corresponding path program 1 times [2022-12-14 13:03:01,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:03:01,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686187434] [2022-12-14 13:03:01,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:03:01,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:03:01,679 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 13:03:01,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [285517434] [2022-12-14 13:03:01,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:03:01,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:03:01,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:03:01,682 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:03:01,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 13:03:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:03:01,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 13:03:01,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:03:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:03:01,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:03:01,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:03:01,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686187434] [2022-12-14 13:03:01,816 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 13:03:01,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285517434] [2022-12-14 13:03:01,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285517434] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:03:01,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:03:01,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:03:01,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028423840] [2022-12-14 13:03:01,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:03:01,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 13:03:01,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:03:01,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 13:03:01,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:03:01,849 INFO L87 Difference]: Start difference. First operand has 14 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 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) [2022-12-14 13:03:01,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:03:01,941 INFO L93 Difference]: Finished difference Result 38 states and 56 transitions. [2022-12-14 13:03:01,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 13:03:01,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 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 [2022-12-14 13:03:01,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:03:01,951 INFO L225 Difference]: With dead ends: 38 [2022-12-14 13:03:01,951 INFO L226 Difference]: Without dead ends: 19 [2022-12-14 13:03:01,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:03:01,957 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:03:01,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 35 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:03:01,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-12-14 13:03:01,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-12-14 13:03:01,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 13:03:01,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-12-14 13:03:01,989 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 6 [2022-12-14 13:03:01,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:03:01,989 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-12-14 13:03:01,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 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) [2022-12-14 13:03:01,990 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-12-14 13:03:01,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 13:03:01,990 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:03:01,990 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:03:01,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 13:03:02,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 13:03:02,193 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:03:02,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:03:02,196 INFO L85 PathProgramCache]: Analyzing trace with hash -19935186, now seen corresponding path program 1 times [2022-12-14 13:03:02,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:03:02,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35503082] [2022-12-14 13:03:02,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:03:02,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:03:02,253 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 13:03:02,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [390802608] [2022-12-14 13:03:02,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:03:02,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:03:02,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:03:02,258 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:03:02,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 13:03:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:03:02,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-14 13:03:02,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:03:02,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:03:02,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:03:02,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:03:02,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:03:02,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35503082] [2022-12-14 13:03:02,809 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 13:03:02,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390802608] [2022-12-14 13:03:02,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390802608] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:03:02,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [267374945] [2022-12-14 13:03:02,829 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 13:03:02,829 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:03:02,833 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:03:02,838 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:03:02,839 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:03:03,538 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-12-14 13:03:03,600 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:03:04,001 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '205#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 13:03:04,002 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:03:04,002 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 13:03:04,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2022-12-14 13:03:04,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538253901] [2022-12-14 13:03:04,002 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 13:03:04,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 13:03:04,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:03:04,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 13:03:04,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-12-14 13:03:04,005 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 13:03:04,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:03:04,106 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-12-14 13:03:04,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 13:03:04,107 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2022-12-14 13:03:04,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:03:04,108 INFO L225 Difference]: With dead ends: 30 [2022-12-14 13:03:04,108 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 13:03:04,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-12-14 13:03:04,109 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 18 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:03:04,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 31 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:03:04,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 13:03:04,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2022-12-14 13:03:04,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 13:03:04,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2022-12-14 13:03:04,116 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2022-12-14 13:03:04,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:03:04,117 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2022-12-14 13:03:04,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 13:03:04,117 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2022-12-14 13:03:04,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 13:03:04,118 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:03:04,118 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 13:03:04,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 13:03:04,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:03:04,319 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:03:04,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:03:04,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1489129899, now seen corresponding path program 1 times [2022-12-14 13:03:04,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:03:04,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267099594] [2022-12-14 13:03:04,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:03:04,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:03:04,344 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 13:03:04,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2084281939] [2022-12-14 13:03:04,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:03:04,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:03:04,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:03:04,349 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:03:04,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 13:03:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:03:04,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-14 13:03:04,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:03:04,545 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 13:03:04,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:03:34,653 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_12| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17| Int)) (or (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17| 2)) 4) 0) (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_12|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17|))))) is different from true [2022-12-14 13:03:52,709 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (= c___VERIFIER_assert_~cond 0) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_12| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17| Int)) (or (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17| 2)) 4) 0) (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_12|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_17|))))) is different from true [2022-12-14 13:03:58,742 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (= (+ |ULTIMATE.start_main_~k~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 2) 1)))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0))) is different from false [2022-12-14 13:04:00,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:04:00,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267099594] [2022-12-14 13:04:00,768 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 13:04:00,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084281939] [2022-12-14 13:04:00,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084281939] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:04:00,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [680329913] [2022-12-14 13:04:00,771 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 13:04:00,771 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:04:00,771 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:04:00,771 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:04:00,771 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:04:01,089 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 60 for LOIs [2022-12-14 13:04:01,146 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:04:35,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-12-14 13:04:35,439 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-12-14 13:04:35,440 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:898) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:772) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:346) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:306) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.generateInterpolants(SifaRunner.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 40 more [2022-12-14 13:04:35,441 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:04:35,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-12-14 13:04:35,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019579069] [2022-12-14 13:04:35,441 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-14 13:04:35,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 13:04:35,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:04:35,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 13:04:35,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=282, Unknown=5, NotChecked=108, Total=462 [2022-12-14 13:04:35,443 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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) [2022-12-14 13:04:35,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 13:04:35,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=67, Invalid=282, Unknown=5, NotChecked=108, Total=462 [2022-12-14 13:04:35,444 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:04:35,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:04:35,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 13:04:35,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-14 13:04:35,646 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@64efe8bd at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:460) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:104) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:246) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:210) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:353) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 13:04:35,651 INFO L158 Benchmark]: Toolchain (without parser) took 94593.65ms. Allocated memory was 127.9MB in the beginning and 188.7MB in the end (delta: 60.8MB). Free memory was 95.7MB in the beginning and 97.8MB in the end (delta: -2.1MB). Peak memory consumption was 61.1MB. Max. memory is 16.1GB. [2022-12-14 13:04:35,651 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 127.9MB. Free memory is still 71.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:04:35,652 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.02ms. Allocated memory is still 127.9MB. Free memory was 95.3MB in the beginning and 85.0MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 13:04:35,652 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.68ms. Allocated memory is still 127.9MB. Free memory was 85.0MB in the beginning and 83.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:04:35,652 INFO L158 Benchmark]: Boogie Preprocessor took 14.27ms. Allocated memory is still 127.9MB. Free memory was 83.4MB in the beginning and 82.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:04:35,653 INFO L158 Benchmark]: RCFGBuilder took 235.24ms. Allocated memory is still 127.9MB. Free memory was 82.3MB in the beginning and 70.8MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 13:04:35,653 INFO L158 Benchmark]: TraceAbstraction took 94134.36ms. Allocated memory was 127.9MB in the beginning and 188.7MB in the end (delta: 60.8MB). Free memory was 70.3MB in the beginning and 97.8MB in the end (delta: -27.5MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. [2022-12-14 13:04:35,655 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 127.9MB. Free memory is still 71.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 181.02ms. Allocated memory is still 127.9MB. Free memory was 95.3MB in the beginning and 85.0MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.68ms. Allocated memory is still 127.9MB. Free memory was 85.0MB in the beginning and 83.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.27ms. Allocated memory is still 127.9MB. Free memory was 83.4MB in the beginning and 82.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 235.24ms. Allocated memory is still 127.9MB. Free memory was 82.3MB in the beginning and 70.8MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 94134.36ms. Allocated memory was 127.9MB in the beginning and 188.7MB in the end (delta: 60.8MB). Free memory was 70.3MB in the beginning and 97.8MB in the end (delta: -27.5MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@64efe8bd de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@64efe8bd: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh --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 53086523abe0dc699ccd28b0916f17f8825d4641577f06835b9d81e9579a444f --- 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-2329fc7 [2022-12-14 13:04:36,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:04:36,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:04:36,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:04:36,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:04:36,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:04:36,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:04:36,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:04:36,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:04:36,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:04:36,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:04:36,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:04:36,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:04:36,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:04:36,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:04:36,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:04:36,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:04:36,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:04:36,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:04:36,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:04:36,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:04:36,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:04:36,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:04:36,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:04:36,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:04:36,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:04:36,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:04:36,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:04:36,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:04:36,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:04:36,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:04:36,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:04:36,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:04:36,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:04:36,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:04:36,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:04:36,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:04:36,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:04:36,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:04:36,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:04:36,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:04:36,990 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 13:04:37,011 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:04:37,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:04:37,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:04:37,011 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:04:37,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:04:37,012 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:04:37,012 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:04:37,012 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:04:37,012 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:04:37,012 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:04:37,012 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:04:37,013 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:04:37,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:04:37,013 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:04:37,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:04:37,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:04:37,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:04:37,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:04:37,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:04:37,014 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 13:04:37,014 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 13:04:37,014 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 13:04:37,014 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:04:37,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:04:37,014 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:04:37,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:04:37,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:04:37,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 13:04:37,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:04:37,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:04:37,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:04:37,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:04:37,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:04:37,016 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 13:04:37,016 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 13:04:37,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:04:37,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:04:37,016 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 13:04:37,016 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53086523abe0dc699ccd28b0916f17f8825d4641577f06835b9d81e9579a444f [2022-12-14 13:04:37,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:04:37,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:04:37,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:04:37,246 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:04:37,246 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:04:37,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c [2022-12-14 13:04:39,807 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:04:39,962 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:04:39,962 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c [2022-12-14 13:04:39,967 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/data/fc4bf662a/b26157f46f864283bef69ccbb1b16bee/FLAGcc06b2644 [2022-12-14 13:04:39,978 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/data/fc4bf662a/b26157f46f864283bef69ccbb1b16bee [2022-12-14 13:04:39,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:04:39,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:04:39,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:04:39,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:04:39,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:04:39,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:04:39" (1/1) ... [2022-12-14 13:04:39,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@778db0a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:39, skipping insertion in model container [2022-12-14 13:04:39,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:04:39" (1/1) ... [2022-12-14 13:04:39,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:04:40,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:04:40,119 WARN L237 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_78e6f923-e5c3-43f6-9f3c-f21da9975476/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c[458,471] [2022-12-14 13:04:40,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:04:40,141 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:04:40,151 WARN L237 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_78e6f923-e5c3-43f6-9f3c-f21da9975476/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c[458,471] [2022-12-14 13:04:40,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:04:40,166 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:04:40,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:40 WrapperNode [2022-12-14 13:04:40,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:04:40,167 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:04:40,167 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:04:40,167 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:04:40,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:40" (1/1) ... [2022-12-14 13:04:40,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:40" (1/1) ... [2022-12-14 13:04:40,192 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2022-12-14 13:04:40,192 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:04:40,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:04:40,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:04:40,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:04:40,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:40" (1/1) ... [2022-12-14 13:04:40,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:40" (1/1) ... [2022-12-14 13:04:40,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:40" (1/1) ... [2022-12-14 13:04:40,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:40" (1/1) ... [2022-12-14 13:04:40,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:40" (1/1) ... [2022-12-14 13:04:40,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:40" (1/1) ... [2022-12-14 13:04:40,208 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:40" (1/1) ... [2022-12-14 13:04:40,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:40" (1/1) ... [2022-12-14 13:04:40,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:04:40,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:04:40,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:04:40,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:04:40,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:40" (1/1) ... [2022-12-14 13:04:40,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:04:40,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:04:40,236 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:04:40,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:04:40,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:04:40,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 13:04:40,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:04:40,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:04:40,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 13:04:40,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 13:04:40,343 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:04:40,346 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:04:40,555 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:04:40,561 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:04:40,561 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 13:04:40,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:04:40 BoogieIcfgContainer [2022-12-14 13:04:40,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:04:40,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:04:40,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:04:40,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:04:40,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:04:39" (1/3) ... [2022-12-14 13:04:40,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b8b1b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:04:40, skipping insertion in model container [2022-12-14 13:04:40,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:40" (2/3) ... [2022-12-14 13:04:40,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b8b1b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:04:40, skipping insertion in model container [2022-12-14 13:04:40,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:04:40" (3/3) ... [2022-12-14 13:04:40,569 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound10.c [2022-12-14 13:04:40,583 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:04:40,584 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:04:40,618 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:04:40,623 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;@6e271ec1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:04:40,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:04:40,626 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 13:04:40,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 13:04:40,631 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:04:40,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:04:40,632 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:04:40,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:04:40,636 INFO L85 PathProgramCache]: Analyzing trace with hash -589436290, now seen corresponding path program 1 times [2022-12-14 13:04:40,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:04:40,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761615504] [2022-12-14 13:04:40,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:40,646 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:04:40,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:04:40,647 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:04:40,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 13:04:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:40,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 13:04:40,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:04:40,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:04:40,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:04:40,804 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:04:40,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761615504] [2022-12-14 13:04:40,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761615504] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:04:40,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:04:40,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:04:40,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391134783] [2022-12-14 13:04:40,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:04:40,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 13:04:40,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:04:40,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 13:04:40,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 13:04:40,840 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-12-14 13:04:40,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:04:40,859 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2022-12-14 13:04:40,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 13:04:40,861 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 9 [2022-12-14 13:04:40,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:04:40,868 INFO L225 Difference]: With dead ends: 35 [2022-12-14 13:04:40,868 INFO L226 Difference]: Without dead ends: 15 [2022-12-14 13:04:40,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 13:04:40,874 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:04:40,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:04:40,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-14 13:04:40,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-14 13:04:40,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 13:04:40,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-12-14 13:04:40,909 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2022-12-14 13:04:40,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:04:40,909 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-12-14 13:04:40,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-12-14 13:04:40,910 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-12-14 13:04:40,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 13:04:40,910 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:04:40,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:04:40,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 13:04:41,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:04:41,113 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:04:41,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:04:41,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1187358532, now seen corresponding path program 1 times [2022-12-14 13:04:41,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:04:41,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728330515] [2022-12-14 13:04:41,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:41,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:04:41,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:04:41,154 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:04:41,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 13:04:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:41,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 13:04:41,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:04:41,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:04:41,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:04:41,484 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:04:41,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728330515] [2022-12-14 13:04:41,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [728330515] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:04:41,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:04:41,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 13:04:41,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685841672] [2022-12-14 13:04:41,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:04:41,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 13:04:41,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:04:41,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 13:04:41,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:04:41,487 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-12-14 13:04:42,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:04:42,570 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2022-12-14 13:04:42,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 13:04:42,590 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), 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 9 [2022-12-14 13:04:42,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:04:42,591 INFO L225 Difference]: With dead ends: 26 [2022-12-14 13:04:42,591 INFO L226 Difference]: Without dead ends: 22 [2022-12-14 13:04:42,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:04:42,592 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:04:42,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 45 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 13:04:42,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-14 13:04:42,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-12-14 13:04:42,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 13:04:42,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-12-14 13:04:42,599 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 9 [2022-12-14 13:04:42,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:04:42,599 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-12-14 13:04:42,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-12-14 13:04:42,600 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-12-14 13:04:42,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 13:04:42,600 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:04:42,600 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:04:42,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 13:04:42,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:04:42,802 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:04:42,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:04:42,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1781398469, now seen corresponding path program 1 times [2022-12-14 13:04:42,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:04:42,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383675903] [2022-12-14 13:04:42,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:42,807 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:04:42,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:04:42,809 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:04:42,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-14 13:04:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:43,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 13:04:43,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:04:44,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:04:44,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:04:56,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 13:04:56,750 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:04:56,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383675903] [2022-12-14 13:04:56,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1383675903] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 13:04:56,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:04:56,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-12-14 13:04:56,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827470130] [2022-12-14 13:04:56,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:04:56,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 13:04:56,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:04:56,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 13:04:56,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 13:04:56,753 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-12-14 13:05:01,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 13:05:03,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 13:05:03,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:05:03,352 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2022-12-14 13:05:03,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 13:05:03,382 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), 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 16 [2022-12-14 13:05:03,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:05:03,383 INFO L225 Difference]: With dead ends: 28 [2022-12-14 13:05:03,383 INFO L226 Difference]: Without dead ends: 23 [2022-12-14 13:05:03,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-14 13:05:03,385 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:05:03,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 37 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-12-14 13:05:03,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-14 13:05:03,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-12-14 13:05:03,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 13:05:03,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-12-14 13:05:03,394 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 16 [2022-12-14 13:05:03,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:05:03,395 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-12-14 13:05:03,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-12-14 13:05:03,395 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-12-14 13:05:03,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 13:05:03,396 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:05:03,396 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:05:03,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-14 13:05:03,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:05:03,598 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:05:03,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:05:03,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1711372296, now seen corresponding path program 1 times [2022-12-14 13:05:03,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:05:03,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281625982] [2022-12-14 13:05:03,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:05:03,602 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:05:03,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:05:03,605 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:05:03,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-14 13:05:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:05:03,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 13:05:03,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:05:04,550 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 13:05:04,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:05:16,945 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 13:05:16,945 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:05:16,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281625982] [2022-12-14 13:05:16,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281625982] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:05:16,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1567095266] [2022-12-14 13:05:16,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:05:16,946 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 13:05:16,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 13:05:16,947 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 13:05:16,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-12-14 13:05:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:05:17,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 13:05:17,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:05:17,734 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 13:05:17,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:05:22,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1567095266] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:05:22,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651807359] [2022-12-14 13:05:22,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:05:22,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:05:22,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:05:22,986 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:05:22,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 13:05:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:05:23,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 13:05:23,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:05:23,673 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 13:05:23,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:05:28,214 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 13:05:28,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651807359] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:05:28,214 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-12-14 13:05:28,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7, 9, 7] total 16 [2022-12-14 13:05:28,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967425712] [2022-12-14 13:05:28,215 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-12-14 13:05:28,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 13:05:28,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:05:28,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 13:05:28,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-12-14 13:05:28,217 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 16 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 8 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 13:05:54,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:05:54,413 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2022-12-14 13:05:54,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 13:05:54,413 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 8 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 22 [2022-12-14 13:05:54,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:05:54,414 INFO L225 Difference]: With dead ends: 38 [2022-12-14 13:05:54,414 INFO L226 Difference]: Without dead ends: 32 [2022-12-14 13:05:54,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 31.1s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2022-12-14 13:05:54,415 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 33 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:05:54,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 81 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-12-14 13:05:54,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-14 13:05:54,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-12-14 13:05:54,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 13:05:54,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-12-14 13:05:54,424 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2022-12-14 13:05:54,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:05:54,425 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-12-14 13:05:54,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 8 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 13:05:54,425 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-12-14 13:05:54,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-14 13:05:54,426 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:05:54,426 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:05:54,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2022-12-14 13:05:54,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-14 13:05:54,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 13:05:55,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:05:55,028 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:05:55,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:05:55,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1384689793, now seen corresponding path program 2 times [2022-12-14 13:05:55,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:05:55,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777781452] [2022-12-14 13:05:55,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 13:05:55,031 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:05:55,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:05:55,032 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:05:55,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-14 13:05:55,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 13:05:55,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:05:55,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-14 13:05:55,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:05:57,057 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-14 13:05:57,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:06:32,763 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-14 13:06:32,763 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:06:32,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777781452] [2022-12-14 13:06:32,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777781452] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:06:32,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [749196302] [2022-12-14 13:06:32,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 13:06:32,764 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 13:06:32,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 13:06:32,765 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 13:06:32,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-12-14 13:06:33,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 13:06:33,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:06:34,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 13:06:34,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:06:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-14 13:06:34,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:06:55,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [749196302] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:06:55,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248468126] [2022-12-14 13:06:55,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 13:06:55,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:06:55,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:06:55,248 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:06:55,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 13:06:56,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 13:06:56,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:06:56,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-14 13:06:56,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:06:57,325 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-14 13:06:57,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:07:09,415 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-14 13:07:09,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248468126] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:07:09,416 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-12-14 13:07:09,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10, 12, 10] total 27 [2022-12-14 13:07:09,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606505433] [2022-12-14 13:07:09,416 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-12-14 13:07:09,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-14 13:07:09,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:07:09,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-14 13:07:09,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=609, Unknown=1, NotChecked=0, Total=756 [2022-12-14 13:07:09,422 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 27 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 19 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-12-14 13:07:33,525 WARN L233 SmtUtils]: Spent 9.19s on a formula simplification. DAG size of input: 71 DAG size of output: 64 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:07:48,523 WARN L233 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 70 DAG size of output: 63 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:07:56,925 WARN L233 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 60 DAG size of output: 53 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:08:28,397 WARN L233 SmtUtils]: Spent 5.77s on a formula simplification. DAG size of input: 66 DAG size of output: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:08:28,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:08:28,610 INFO L93 Difference]: Finished difference Result 56 states and 70 transitions. [2022-12-14 13:08:28,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-14 13:08:28,610 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 19 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 43 [2022-12-14 13:08:28,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:08:28,611 INFO L225 Difference]: With dead ends: 56 [2022-12-14 13:08:28,611 INFO L226 Difference]: Without dead ends: 50 [2022-12-14 13:08:28,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 218 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 91.1s TimeCoverageRelationStatistics Valid=355, Invalid=1450, Unknown=1, NotChecked=0, Total=1806 [2022-12-14 13:08:28,613 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 65 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2022-12-14 13:08:28,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 190 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 18.7s Time] [2022-12-14 13:08:28,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-12-14 13:08:28,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-12-14 13:08:28,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 13:08:28,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2022-12-14 13:08:28,635 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 43 [2022-12-14 13:08:28,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:08:28,635 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2022-12-14 13:08:28,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 19 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-12-14 13:08:28,636 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2022-12-14 13:08:28,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-14 13:08:28,637 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:08:28,637 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:08:28,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-14 13:08:28,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2022-12-14 13:08:29,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 13:08:29,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:08:29,240 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:08:29,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:08:29,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1817498849, now seen corresponding path program 3 times [2022-12-14 13:08:29,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:08:29,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888333826] [2022-12-14 13:08:29,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 13:08:29,243 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:08:29,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:08:29,246 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:08:29,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-14 13:08:34,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-12-14 13:08:34,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:08:34,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-14 13:08:34,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:08:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 22 proven. 165 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-12-14 13:08:36,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:10:07,949 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 22 proven. 165 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-12-14 13:10:07,950 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:10:07,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888333826] [2022-12-14 13:10:07,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888333826] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:10:07,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [403346707] [2022-12-14 13:10:07,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 13:10:07,950 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 13:10:07,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 13:10:07,951 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 13:10:07,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-12-14 13:10:11,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-12-14 13:10:11,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:10:11,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 13:10:11,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:10:14,719 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 22 proven. 165 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-12-14 13:10:14,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:13:08,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [403346707] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:13:08,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079387320] [2022-12-14 13:13:08,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 13:13:08,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:13:08,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:13:08,147 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:13:08,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 13:13:11,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-12-14 13:13:11,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:13:12,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-14 13:13:12,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:13:16,179 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 22 proven. 165 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-12-14 13:13:16,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:15:27,841 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 22 proven. 165 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-12-14 13:15:27,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079387320] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:15:27,841 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-12-14 13:15:27,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16, 17, 17] total 60 [2022-12-14 13:15:27,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203694722] [2022-12-14 13:15:27,841 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-12-14 13:15:27,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-12-14 13:15:27,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:15:27,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-12-14 13:15:27,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=772, Invalid=4191, Unknown=7, NotChecked=0, Total=4970 [2022-12-14 13:15:27,848 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 60 states, 60 states have (on average 2.0) internal successors, (120), 58 states have internal predecessors, (120), 50 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 13:16:36,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:16:36,777 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2022-12-14 13:16:36,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 13:16:36,778 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.0) internal successors, (120), 58 states have internal predecessors, (120), 50 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 85 [2022-12-14 13:16:36,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:16:36,779 INFO L225 Difference]: With dead ends: 60 [2022-12-14 13:16:36,779 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 13:16:36,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 426 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1921 ImplicationChecksByTransitivity, 342.4s TimeCoverageRelationStatistics Valid=1133, Invalid=5832, Unknown=7, NotChecked=0, Total=6972 [2022-12-14 13:16:36,784 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 41 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.7s IncrementalHoareTripleChecker+Time [2022-12-14 13:16:36,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 477 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 53.7s Time] [2022-12-14 13:16:36,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 13:16:36,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 13:16:36,786 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) [2022-12-14 13:16:36,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 13:16:36,786 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 85 [2022-12-14 13:16:36,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:16:36,786 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 13:16:36,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.0) internal successors, (120), 58 states have internal predecessors, (120), 50 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 13:16:36,787 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 13:16:36,787 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 13:16:36,789 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 13:16:36,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-14 13:16:37,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-14 13:16:37,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2022-12-14 13:16:37,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 13:16:37,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 13:16:57,919 WARN L233 SmtUtils]: Spent 20.50s on a formula simplification. DAG size of input: 125 DAG size of output: 79 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-12-14 13:17:16,674 WARN L233 SmtUtils]: Spent 18.75s on a formula simplification. DAG size of input: 97 DAG size of output: 47 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-12-14 13:17:36,338 WARN L233 SmtUtils]: Spent 19.66s on a formula simplification. DAG size of input: 125 DAG size of output: 79 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-12-14 13:17:38,620 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 13:17:38,621 INFO L895 garLoopResultBuilder]: At program point L27-2(lines 27 36) the Hoare annotation is: (let ((.cse7 (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse5 ((_ sign_extend 16) |ULTIMATE.start_main_~k~0#1|))) (let ((.cse4 ((_ sign_extend 32) .cse5)) (.cse6 (bvneg .cse7))) (let ((.cse0 (= (bvadd (bvneg (bvmul |ULTIMATE.start_main_~y~0#1| (bvmul |ULTIMATE.start_main_~y~0#1| (bvmul |ULTIMATE.start_main_~y~0#1| (_ bv2 64))))) .cse6 (bvmul |ULTIMATE.start_main_~x~0#1| (_ bv4 64)) (bvneg (bvmul |ULTIMATE.start_main_~y~0#1| (bvmul |ULTIMATE.start_main_~y~0#1| .cse7)))) (_ bv0 64))) (.cse1 (bvsle .cse5 (_ bv10 32))) (.cse2 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32))) (.cse3 (or (= (_ bv0 64) (bvadd .cse6 (bvmul .cse4 |ULTIMATE.start_main_~y~0#1|))) (bvslt |ULTIMATE.start_main_~c~0#1| .cse4)))) (or (and .cse0 (= |ULTIMATE.start_main_~y~0#1| (_ bv9 64)) .cse1 (= |ULTIMATE.start_main_~c~0#1| (_ bv9 64)) .cse2 .cse3) (and .cse0 .cse1 (= (_ bv10 64) |ULTIMATE.start_main_~y~0#1|) (bvslt (_ bv9 64) .cse4) .cse2 (= (_ bv10 64) |ULTIMATE.start_main_~c~0#1|)) (and .cse1 (bvsge .cse5 (_ bv0 32)) (= (_ bv0 64) |ULTIMATE.start_main_~x~0#1|) (= (_ bv0 64) |ULTIMATE.start_main_~y~0#1|) .cse2 (= |ULTIMATE.start_main_~c~0#1| (_ bv0 64))) (and .cse0 .cse1 (= (_ bv3 64) |ULTIMATE.start_main_~c~0#1|) (= (_ bv3 64) |ULTIMATE.start_main_~y~0#1|) .cse2 .cse3) (and .cse0 .cse1 (= |ULTIMATE.start_main_~y~0#1| (_ bv6 64)) .cse2 (= |ULTIMATE.start_main_~c~0#1| (_ bv6 64)) .cse3) (and .cse0 (= |ULTIMATE.start_main_~c~0#1| (_ bv4 64)) .cse1 (bvslt (_ bv3 64) .cse4) (= |ULTIMATE.start_main_~y~0#1| (_ bv4 64)) .cse2) (and .cse0 (= |ULTIMATE.start_main_~c~0#1| (_ bv8 64)) .cse1 (= (_ bv8 64) |ULTIMATE.start_main_~y~0#1|) .cse2 .cse3) (and (bvslt (_ bv0 64) .cse4) .cse0 .cse1 (= |ULTIMATE.start_main_~y~0#1| (_ bv1 64)) .cse2 (= |ULTIMATE.start_main_~c~0#1| (_ bv1 64))) (and .cse0 .cse1 (= |ULTIMATE.start_main_~y~0#1| (_ bv7 64)) .cse2 (= |ULTIMATE.start_main_~c~0#1| (_ bv7 64)) .cse3) (and .cse0 .cse1 (= |ULTIMATE.start_main_~c~0#1| (_ bv2 64)) (= |ULTIMATE.start_main_~y~0#1| (_ bv2 64)) .cse2 .cse3) (and .cse0 (= |ULTIMATE.start_main_~c~0#1| (_ bv5 64)) (= |ULTIMATE.start_main_~y~0#1| (_ bv5 64)) .cse1 .cse2 .cse3))))) [2022-12-14 13:17:38,621 INFO L895 garLoopResultBuilder]: At program point L27-3(lines 27 36) the Hoare annotation is: (or (and (= (_ bv0 64) |ULTIMATE.start_main_~x~0#1|) (= (_ bv0 64) |ULTIMATE.start_main_~y~0#1|)) (let ((.cse2 ((_ sign_extend 16) |ULTIMATE.start_main_~k~0#1|))) (let ((.cse4 ((_ sign_extend 32) .cse2)) (.cse1 (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse0 (bvneg .cse1)) (.cse3 (bvmul .cse4 |ULTIMATE.start_main_~y~0#1|))) (and (= (bvadd (bvneg (bvmul |ULTIMATE.start_main_~y~0#1| (bvmul |ULTIMATE.start_main_~y~0#1| (bvmul |ULTIMATE.start_main_~y~0#1| (_ bv2 64))))) .cse0 (bvmul |ULTIMATE.start_main_~x~0#1| (_ bv4 64)) (bvneg (bvmul |ULTIMATE.start_main_~y~0#1| (bvmul |ULTIMATE.start_main_~y~0#1| .cse1)))) (_ bv0 64)) (bvsle .cse2 (_ bv10 32)) (= (_ bv0 64) (bvadd .cse0 .cse3)) (or (bvslt (bvadd |ULTIMATE.start_main_~c~0#1| (_ bv1 64)) .cse4) (= (_ bv0 64) (bvadd .cse4 (bvneg (let ((.cse5 (bvadd |ULTIMATE.start_main_~y~0#1| (_ bv1 64)))) (bvmul .cse5 .cse5))) .cse3)) (not (bvslt |ULTIMATE.start_main_~c~0#1| .cse4))) (bvsge .cse2 (_ bv0 32)) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32))))))) [2022-12-14 13:17:38,621 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 13:17:38,621 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 17 40) the Hoare annotation is: true [2022-12-14 13:17:38,621 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-12-14 13:17:38,621 INFO L899 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2022-12-14 13:17:38,621 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-14 13:17:38,621 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-14 13:17:38,622 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (let ((.cse7 (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse5 ((_ sign_extend 16) |ULTIMATE.start_main_~k~0#1|))) (let ((.cse4 ((_ sign_extend 32) .cse5)) (.cse6 (bvneg .cse7))) (let ((.cse0 (= (bvadd (bvneg (bvmul |ULTIMATE.start_main_~y~0#1| (bvmul |ULTIMATE.start_main_~y~0#1| (bvmul |ULTIMATE.start_main_~y~0#1| (_ bv2 64))))) .cse6 (bvmul |ULTIMATE.start_main_~x~0#1| (_ bv4 64)) (bvneg (bvmul |ULTIMATE.start_main_~y~0#1| (bvmul |ULTIMATE.start_main_~y~0#1| .cse7)))) (_ bv0 64))) (.cse1 (bvsle .cse5 (_ bv10 32))) (.cse2 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32))) (.cse3 (or (= (_ bv0 64) (bvadd .cse6 (bvmul .cse4 |ULTIMATE.start_main_~y~0#1|))) (bvslt |ULTIMATE.start_main_~c~0#1| .cse4)))) (or (and .cse0 (= |ULTIMATE.start_main_~y~0#1| (_ bv9 64)) .cse1 (= |ULTIMATE.start_main_~c~0#1| (_ bv9 64)) .cse2 .cse3) (and .cse0 .cse1 (= (_ bv10 64) |ULTIMATE.start_main_~y~0#1|) (bvslt (_ bv9 64) .cse4) .cse2 (= (_ bv10 64) |ULTIMATE.start_main_~c~0#1|)) (and .cse1 (bvsge .cse5 (_ bv0 32)) (= (_ bv0 64) |ULTIMATE.start_main_~x~0#1|) (= (_ bv0 64) |ULTIMATE.start_main_~y~0#1|) .cse2 (= |ULTIMATE.start_main_~c~0#1| (_ bv0 64))) (and .cse0 .cse1 (= (_ bv3 64) |ULTIMATE.start_main_~c~0#1|) (= (_ bv3 64) |ULTIMATE.start_main_~y~0#1|) .cse2 .cse3) (and .cse0 .cse1 (= |ULTIMATE.start_main_~y~0#1| (_ bv6 64)) .cse2 (= |ULTIMATE.start_main_~c~0#1| (_ bv6 64)) .cse3) (and .cse0 (= |ULTIMATE.start_main_~c~0#1| (_ bv4 64)) .cse1 (bvslt (_ bv3 64) .cse4) (= |ULTIMATE.start_main_~y~0#1| (_ bv4 64)) .cse2) (and .cse0 (= |ULTIMATE.start_main_~c~0#1| (_ bv8 64)) .cse1 (= (_ bv8 64) |ULTIMATE.start_main_~y~0#1|) .cse2 .cse3) (and (bvslt (_ bv0 64) .cse4) .cse0 .cse1 (= |ULTIMATE.start_main_~y~0#1| (_ bv1 64)) .cse2 (= |ULTIMATE.start_main_~c~0#1| (_ bv1 64))) (and .cse0 .cse1 (= |ULTIMATE.start_main_~y~0#1| (_ bv7 64)) .cse2 (= |ULTIMATE.start_main_~c~0#1| (_ bv7 64)) .cse3) (and .cse0 .cse1 (= |ULTIMATE.start_main_~c~0#1| (_ bv2 64)) (= |ULTIMATE.start_main_~y~0#1| (_ bv2 64)) .cse2 .cse3) (and .cse0 (= |ULTIMATE.start_main_~c~0#1| (_ bv5 64)) (= |ULTIMATE.start_main_~y~0#1| (_ bv5 64)) .cse1 .cse2 .cse3))))) [2022-12-14 13:17:38,622 INFO L899 garLoopResultBuilder]: For program point L28-1(lines 27 36) no Hoare annotation was computed. [2022-12-14 13:17:38,622 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2022-12-14 13:17:38,622 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (= (let ((.cse0 (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (bvadd (bvneg (bvmul |ULTIMATE.start_main_~y~0#1| (bvmul |ULTIMATE.start_main_~y~0#1| (bvmul |ULTIMATE.start_main_~y~0#1| (_ bv2 64))))) (bvneg .cse0) (bvmul |ULTIMATE.start_main_~x~0#1| (_ bv4 64)) (bvneg (bvmul |ULTIMATE.start_main_~y~0#1| (bvmul |ULTIMATE.start_main_~y~0#1| .cse0))))) (_ bv0 64)) [2022-12-14 13:17:38,622 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2022-12-14 13:17:38,622 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2022-12-14 13:17:38,623 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2022-12-14 13:17:38,623 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 15) the Hoare annotation is: true [2022-12-14 13:17:38,623 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2022-12-14 13:17:38,623 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2022-12-14 13:17:38,626 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2022-12-14 13:17:38,628 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 13:17:38,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:17:38 BoogieIcfgContainer [2022-12-14 13:17:38,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 13:17:38,652 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 13:17:38,652 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 13:17:38,652 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 13:17:38,653 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:04:40" (3/4) ... [2022-12-14 13:17:38,656 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 13:17:38,661 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-14 13:17:38,663 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-12-14 13:17:38,663 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-14 13:17:38,664 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-14 13:17:38,664 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 13:17:38,687 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 13:17:38,687 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 13:17:38,688 INFO L158 Benchmark]: Toolchain (without parser) took 778706.52ms. Allocated memory is still 92.3MB. Free memory was 70.8MB in the beginning and 36.4MB in the end (delta: 34.3MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. [2022-12-14 13:17:38,688 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory was 37.4MB in the beginning and 37.3MB in the end (delta: 81.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:17:38,688 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.51ms. Allocated memory is still 92.3MB. Free memory was 70.8MB in the beginning and 59.9MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 13:17:38,689 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.78ms. Allocated memory is still 92.3MB. Free memory was 59.9MB in the beginning and 58.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:17:38,689 INFO L158 Benchmark]: Boogie Preprocessor took 17.35ms. Allocated memory is still 92.3MB. Free memory was 58.3MB in the beginning and 57.0MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 13:17:38,689 INFO L158 Benchmark]: RCFGBuilder took 352.38ms. Allocated memory is still 92.3MB. Free memory was 57.0MB in the beginning and 69.6MB in the end (delta: -12.7MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2022-12-14 13:17:38,689 INFO L158 Benchmark]: TraceAbstraction took 778087.07ms. Allocated memory is still 92.3MB. Free memory was 69.1MB in the beginning and 38.8MB in the end (delta: 30.3MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. [2022-12-14 13:17:38,690 INFO L158 Benchmark]: Witness Printer took 35.44ms. Allocated memory is still 92.3MB. Free memory was 38.8MB in the beginning and 36.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:17:38,691 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory was 37.4MB in the beginning and 37.3MB in the end (delta: 81.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.51ms. Allocated memory is still 92.3MB. Free memory was 70.8MB in the beginning and 59.9MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.78ms. Allocated memory is still 92.3MB. Free memory was 59.9MB in the beginning and 58.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.35ms. Allocated memory is still 92.3MB. Free memory was 58.3MB in the beginning and 57.0MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 352.38ms. Allocated memory is still 92.3MB. Free memory was 57.0MB in the beginning and 69.6MB in the end (delta: -12.7MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. * TraceAbstraction took 778087.07ms. Allocated memory is still 92.3MB. Free memory was 69.1MB in the beginning and 38.8MB in the end (delta: 30.3MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. * Witness Printer took 35.44ms. Allocated memory is still 92.3MB. Free memory was 38.8MB in the beginning and 36.4MB in the end (delta: 2.4MB). 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, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 778.0s, OverallIterations: 6, TraceHistogramMax: 12, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 182.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 61.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 155 SdHoareTripleChecker+Valid, 85.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 152 mSDsluCounter, 851 SdHoareTripleChecker+Invalid, 78.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 715 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1446 IncrementalHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 136 mSDtfsCounter, 1446 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 945 GetRequests, 782 SyntacticMatches, 4 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2459 ImplicationChecksByTransitivity, 474.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=5, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 29 PreInvPairs, 60 NumberOfFragments, 1245 HoareAnnotationTreeSize, 29 FomulaSimplifications, 5 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 1540 FormulaSimplificationTreeSizeReductionInter, 61.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 16.7s SatisfiabilityAnalysisTime, 514.9s InterpolantComputationTime, 484 NumberOfCodeBlocks, 484 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 781 ConstructedInterpolants, 0 QuantifiedInterpolants, 6834 SizeOfPredicates, 30 NumberOfNonLiveVariables, 948 ConjunctsInSsa, 189 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 1506/2498 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: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((((((((((~bvadd128(~bvneg128(~bvmul64(y, ~bvmul64(y, ~bvmul64(y, 2bv64)))), ~bvneg128(~bvmul64(y, y)), ~bvmul64(x, 4bv64), ~bvneg128(~bvmul64(y, ~bvmul64(y, ~bvmul64(y, y))))) == 0bv64 && y == 9bv64) && ~bvsle32(~sign_extendFrom8To32(k), 10bv32)) && c == 9bv64) && cond == 1bv32) && (0bv64 == ~bvadd128(~bvneg128(~bvmul64(y, y)), ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y)) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k))))) || (((((~bvadd128(~bvneg128(~bvmul64(y, ~bvmul64(y, ~bvmul64(y, 2bv64)))), ~bvneg128(~bvmul64(y, y)), ~bvmul64(x, 4bv64), ~bvneg128(~bvmul64(y, ~bvmul64(y, ~bvmul64(y, y))))) == 0bv64 && ~bvsle32(~sign_extendFrom8To32(k), 10bv32)) && 10bv64 == y) && ~bvslt64(9bv64, ~sign_extendFrom8To32(~sign_extendFrom8To32(k)))) && cond == 1bv32) && 10bv64 == c)) || (((((~bvsle32(~sign_extendFrom8To32(k), 10bv32) && ~bvsge32(~sign_extendFrom8To32(k), 0bv32)) && 0bv64 == x) && 0bv64 == y) && cond == 1bv32) && c == 0bv64)) || (((((~bvadd128(~bvneg128(~bvmul64(y, ~bvmul64(y, ~bvmul64(y, 2bv64)))), ~bvneg128(~bvmul64(y, y)), ~bvmul64(x, 4bv64), ~bvneg128(~bvmul64(y, ~bvmul64(y, ~bvmul64(y, y))))) == 0bv64 && ~bvsle32(~sign_extendFrom8To32(k), 10bv32)) && 3bv64 == c) && 3bv64 == y) && cond == 1bv32) && (0bv64 == ~bvadd128(~bvneg128(~bvmul64(y, y)), ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y)) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k)))))) || (((((~bvadd128(~bvneg128(~bvmul64(y, ~bvmul64(y, ~bvmul64(y, 2bv64)))), ~bvneg128(~bvmul64(y, y)), ~bvmul64(x, 4bv64), ~bvneg128(~bvmul64(y, ~bvmul64(y, ~bvmul64(y, y))))) == 0bv64 && ~bvsle32(~sign_extendFrom8To32(k), 10bv32)) && y == 6bv64) && cond == 1bv32) && c == 6bv64) && (0bv64 == ~bvadd128(~bvneg128(~bvmul64(y, y)), ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y)) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k)))))) || (((((~bvadd128(~bvneg128(~bvmul64(y, ~bvmul64(y, ~bvmul64(y, 2bv64)))), ~bvneg128(~bvmul64(y, y)), ~bvmul64(x, 4bv64), ~bvneg128(~bvmul64(y, ~bvmul64(y, ~bvmul64(y, y))))) == 0bv64 && c == 4bv64) && ~bvsle32(~sign_extendFrom8To32(k), 10bv32)) && ~bvslt64(3bv64, ~sign_extendFrom8To32(~sign_extendFrom8To32(k)))) && y == 4bv64) && cond == 1bv32)) || (((((~bvadd128(~bvneg128(~bvmul64(y, ~bvmul64(y, ~bvmul64(y, 2bv64)))), ~bvneg128(~bvmul64(y, y)), ~bvmul64(x, 4bv64), ~bvneg128(~bvmul64(y, ~bvmul64(y, ~bvmul64(y, y))))) == 0bv64 && c == 8bv64) && ~bvsle32(~sign_extendFrom8To32(k), 10bv32)) && 8bv64 == y) && cond == 1bv32) && (0bv64 == ~bvadd128(~bvneg128(~bvmul64(y, y)), ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y)) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k)))))) || (((((~bvslt64(0bv64, ~sign_extendFrom8To32(~sign_extendFrom8To32(k))) && ~bvadd128(~bvneg128(~bvmul64(y, ~bvmul64(y, ~bvmul64(y, 2bv64)))), ~bvneg128(~bvmul64(y, y)), ~bvmul64(x, 4bv64), ~bvneg128(~bvmul64(y, ~bvmul64(y, ~bvmul64(y, y))))) == 0bv64) && ~bvsle32(~sign_extendFrom8To32(k), 10bv32)) && y == 1bv64) && cond == 1bv32) && c == 1bv64)) || (((((~bvadd128(~bvneg128(~bvmul64(y, ~bvmul64(y, ~bvmul64(y, 2bv64)))), ~bvneg128(~bvmul64(y, y)), ~bvmul64(x, 4bv64), ~bvneg128(~bvmul64(y, ~bvmul64(y, ~bvmul64(y, y))))) == 0bv64 && ~bvsle32(~sign_extendFrom8To32(k), 10bv32)) && y == 7bv64) && cond == 1bv32) && c == 7bv64) && (0bv64 == ~bvadd128(~bvneg128(~bvmul64(y, y)), ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y)) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k)))))) || (((((~bvadd128(~bvneg128(~bvmul64(y, ~bvmul64(y, ~bvmul64(y, 2bv64)))), ~bvneg128(~bvmul64(y, y)), ~bvmul64(x, 4bv64), ~bvneg128(~bvmul64(y, ~bvmul64(y, ~bvmul64(y, y))))) == 0bv64 && ~bvsle32(~sign_extendFrom8To32(k), 10bv32)) && c == 2bv64) && y == 2bv64) && cond == 1bv32) && (0bv64 == ~bvadd128(~bvneg128(~bvmul64(y, y)), ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y)) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k)))))) || (((((~bvadd128(~bvneg128(~bvmul64(y, ~bvmul64(y, ~bvmul64(y, 2bv64)))), ~bvneg128(~bvmul64(y, y)), ~bvmul64(x, 4bv64), ~bvneg128(~bvmul64(y, ~bvmul64(y, ~bvmul64(y, y))))) == 0bv64 && c == 5bv64) && y == 5bv64) && ~bvsle32(~sign_extendFrom8To32(k), 10bv32)) && cond == 1bv32) && (0bv64 == ~bvadd128(~bvneg128(~bvmul64(y, y)), ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y)) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k))))) RESULT: Ultimate proved your program to be correct! [2022-12-14 13:17:38,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e6f923-e5c3-43f6-9f3c-f21da9975476/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE