./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87608ec580cc80a59c7836f9aeadd0fc773dea5ebb620dd020651936daa4e397 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:17:43,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:17:43,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:17:43,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:17:43,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:17:43,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:17:43,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:17:43,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:17:43,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:17:43,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:17:43,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:17:43,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:17:43,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:17:43,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:17:43,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:17:43,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:17:43,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:17:43,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:17:43,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:17:43,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:17:43,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:17:43,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:17:43,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:17:43,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:17:43,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:17:43,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:17:43,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:17:43,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:17:43,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:17:43,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:17:43,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:17:43,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:17:43,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:17:43,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:17:43,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:17:43,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:17:43,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:17:43,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:17:43,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:17:43,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:17:43,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:17:43,629 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:17:43,652 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:17:43,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:17:43,653 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:17:43,653 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:17:43,654 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:17:43,654 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:17:43,654 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:17:43,655 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:17:43,655 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:17:43,655 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:17:43,656 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:17:43,656 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:17:43,656 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:17:43,656 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:17:43,657 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:17:43,657 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:17:43,657 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:17:43,658 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:17:43,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:17:43,659 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:17:43,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:17:43,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:17:43,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:17:43,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:17:43,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:17:43,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:17:43,661 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:17:43,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:17:43,661 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:17:43,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:17:43,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:17:43,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:17:43,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:17:43,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:17:43,663 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:17:43,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:17:43,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:17:43,664 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:17:43,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:17:43,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:17:43,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:17:43,665 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_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87608ec580cc80a59c7836f9aeadd0fc773dea5ebb620dd020651936daa4e397 [2022-11-03 02:17:43,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:17:43,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:17:43,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:17:43,988 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:17:43,989 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:17:43,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c [2022-11-03 02:17:44,077 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/data/46873e910/2a2f1d27bea7484fbdcd18e17cfd1299/FLAG2e97cdcc3 [2022-11-03 02:17:44,694 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:17:44,695 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c [2022-11-03 02:17:44,707 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/data/46873e910/2a2f1d27bea7484fbdcd18e17cfd1299/FLAG2e97cdcc3 [2022-11-03 02:17:45,052 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/data/46873e910/2a2f1d27bea7484fbdcd18e17cfd1299 [2022-11-03 02:17:45,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:17:45,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:17:45,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:17:45,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:17:45,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:17:45,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:17:45" (1/1) ... [2022-11-03 02:17:45,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f75ea8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:45, skipping insertion in model container [2022-11-03 02:17:45,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:17:45" (1/1) ... [2022-11-03 02:17:45,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:17:45,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:17:45,327 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c[458,471] [2022-11-03 02:17:45,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:17:45,352 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:17:45,361 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c[458,471] [2022-11-03 02:17:45,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:17:45,384 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:17:45,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:45 WrapperNode [2022-11-03 02:17:45,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:17:45,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:17:45,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:17:45,386 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:17:45,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:45" (1/1) ... [2022-11-03 02:17:45,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:45" (1/1) ... [2022-11-03 02:17:45,416 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2022-11-03 02:17:45,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:17:45,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:17:45,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:17:45,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:17:45,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:45" (1/1) ... [2022-11-03 02:17:45,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:45" (1/1) ... [2022-11-03 02:17:45,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:45" (1/1) ... [2022-11-03 02:17:45,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:45" (1/1) ... [2022-11-03 02:17:45,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:45" (1/1) ... [2022-11-03 02:17:45,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:45" (1/1) ... [2022-11-03 02:17:45,441 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:45" (1/1) ... [2022-11-03 02:17:45,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:45" (1/1) ... [2022-11-03 02:17:45,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:17:45,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:17:45,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:17:45,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:17:45,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:45" (1/1) ... [2022-11-03 02:17:45,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:17:45,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:17:45,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:17:45,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:17:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:17:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:17:45,525 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:17:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:17:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:17:45,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:17:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 02:17:45,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 02:17:45,588 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:17:45,590 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:17:45,803 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:17:45,826 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:17:45,826 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:17:45,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:17:45 BoogieIcfgContainer [2022-11-03 02:17:45,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:17:45,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:17:45,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:17:45,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:17:45,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:17:45" (1/3) ... [2022-11-03 02:17:45,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63002830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:17:45, skipping insertion in model container [2022-11-03 02:17:45,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:45" (2/3) ... [2022-11-03 02:17:45,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63002830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:17:45, skipping insertion in model container [2022-11-03 02:17:45,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:17:45" (3/3) ... [2022-11-03 02:17:45,838 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound1.c [2022-11-03 02:17:45,858 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:17:45,858 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:17:45,910 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:17:45,917 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;@f5ec6a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:17:45,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:17:45,942 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-03 02:17:45,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 02:17:45,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:45,950 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:17:45,951 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:17:45,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:45,956 INFO L85 PathProgramCache]: Analyzing trace with hash 2113922188, now seen corresponding path program 1 times [2022-11-03 02:17:45,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:17:45,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622934837] [2022-11-03 02:17:45,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:45,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:17:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:46,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:17:46,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622934837] [2022-11-03 02:17:46,202 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 02:17:46,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127704858] [2022-11-03 02:17:46,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:46,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:17:46,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:17:46,206 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:17:46,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:17:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:46,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 02:17:46,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:17:46,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:17:46,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:17:46,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127704858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:17:46,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:17:46,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:17:46,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250007714] [2022-11-03 02:17:46,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:17:46,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:17:46,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:17:46,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:17:46,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:17:46,347 INFO L87 Difference]: Start difference. First operand has 19 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:17:46,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:17:46,395 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2022-11-03 02:17:46,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:17:46,400 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2022-11-03 02:17:46,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:17:46,411 INFO L225 Difference]: With dead ends: 32 [2022-11-03 02:17:46,412 INFO L226 Difference]: Without dead ends: 17 [2022-11-03 02:17:46,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:17:46,422 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:17:46,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:17:46,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-03 02:17:46,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-03 02:17:46,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:17:46,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-11-03 02:17:46,458 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 13 [2022-11-03 02:17:46,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:17:46,460 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-11-03 02:17:46,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:17:46,460 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-11-03 02:17:46,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 02:17:46,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:46,462 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:17:46,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:17:46,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:17:46,683 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:17:46,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:46,685 INFO L85 PathProgramCache]: Analyzing trace with hash 2066763035, now seen corresponding path program 1 times [2022-11-03 02:17:46,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:17:46,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15905198] [2022-11-03 02:17:46,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:46,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:17:46,702 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:17:46,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630296323] [2022-11-03 02:17:46,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:46,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:17:46,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:17:46,712 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:17:46,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:17:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:46,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:17:46,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:17:46,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:17:46,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:17:46,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:17:46,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15905198] [2022-11-03 02:17:46,883 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:17:46,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630296323] [2022-11-03 02:17:46,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630296323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:17:46,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:17:46,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:17:46,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74410794] [2022-11-03 02:17:46,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:17:46,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:17:46,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:17:46,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:17:46,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:17:46,887 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:18:58,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20m for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-03 02:18:58,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:58,738 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2022-11-03 02:18:58,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:18:58,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2022-11-03 02:18:58,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:58,741 INFO L225 Difference]: With dead ends: 28 [2022-11-03 02:18:58,741 INFO L226 Difference]: Without dead ends: 24 [2022-11-03 02:18:58,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:18:58,743 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:58,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 50 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 1 Unknown, 0 Unchecked, 71.8s Time] [2022-11-03 02:18:58,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-03 02:18:58,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-03 02:18:58,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-03 02:18:58,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-11-03 02:18:58,758 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2022-11-03 02:18:58,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:58,759 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-11-03 02:18:58,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:18:58,760 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-11-03 02:18:58,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 02:18:58,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:58,763 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:58,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:58,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:18:58,980 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:58,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:58,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1985624712, now seen corresponding path program 1 times [2022-11-03 02:18:58,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:58,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63118790] [2022-11-03 02:18:58,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:58,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:59,008 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:18:59,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581198682] [2022-11-03 02:18:59,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:59,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:18:59,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:18:59,013 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:18:59,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:18:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:59,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:18:59,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:59,209 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:18:59,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:19:05,467 WARN L234 SmtUtils]: Spent 5.98s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:19:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:19:05,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:05,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63118790] [2022-11-03 02:19:05,582 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:19:05,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581198682] [2022-11-03 02:19:05,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581198682] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:19:05,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:19:05,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-11-03 02:19:05,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28221957] [2022-11-03 02:19:05,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:05,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:19:05,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:05,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:19:05,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:19:05,585 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:19:05,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:05,675 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-11-03 02:19:05,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:19:05,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2022-11-03 02:19:05,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:05,677 INFO L225 Difference]: With dead ends: 30 [2022-11-03 02:19:05,677 INFO L226 Difference]: Without dead ends: 26 [2022-11-03 02:19:05,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:05,679 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:05,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 40 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:19:05,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-03 02:19:05,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-03 02:19:05,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-03 02:19:05,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-11-03 02:19:05,696 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 20 [2022-11-03 02:19:05,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:05,697 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-11-03 02:19:05,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:19:05,697 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-11-03 02:19:05,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 02:19:05,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:05,699 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:05,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:05,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:19:05,928 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:05,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:05,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1002189902, now seen corresponding path program 1 times [2022-11-03 02:19:05,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:05,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371283995] [2022-11-03 02:19:05,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:05,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:05,943 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:19:05,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055911834] [2022-11-03 02:19:05,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:05,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:19:05,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:19:05,945 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:19:05,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:19:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:06,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:19:06,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:19:06,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:19:06,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:06,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371283995] [2022-11-03 02:19:06,490 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:19:06,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055911834] [2022-11-03 02:19:06,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055911834] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:19:06,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1877456499] [2022-11-03 02:19:06,522 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-03 02:19:06,523 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:19:06,527 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:19:06,534 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:19:06,535 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:19:08,585 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 18 for LOIs [2022-11-03 02:19:08,606 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 74 for LOIs [2022-11-03 02:19:08,648 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:19:10,758 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '608#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:19:10,758 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:19:10,759 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:19:10,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-11-03 02:19:10,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70002571] [2022-11-03 02:19:10,759 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-03 02:19:10,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:19:10,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:10,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:19:10,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-03 02:19:10,761 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-03 02:19:10,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:10,910 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-11-03 02:19:10,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:19:10,910 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 31 [2022-11-03 02:19:10,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:10,911 INFO L225 Difference]: With dead ends: 35 [2022-11-03 02:19:10,912 INFO L226 Difference]: Without dead ends: 29 [2022-11-03 02:19:10,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 53 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2022-11-03 02:19:10,913 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:10,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 84 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:19:10,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-03 02:19:10,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-03 02:19:10,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 02:19:10,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-11-03 02:19:10,935 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 31 [2022-11-03 02:19:10,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:10,936 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-11-03 02:19:10,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-03 02:19:10,937 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-11-03 02:19:10,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-03 02:19:10,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:10,940 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:10,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:11,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:19:11,155 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:11,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:11,156 INFO L85 PathProgramCache]: Analyzing trace with hash -180873249, now seen corresponding path program 2 times [2022-11-03 02:19:11,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:11,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854933931] [2022-11-03 02:19:11,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:11,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:11,181 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:19:11,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1713024363] [2022-11-03 02:19:11,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:19:11,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:19:11,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:19:11,186 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:19:11,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:19:11,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 02:19:11,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:19:11,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:19:11,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:11,764 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 02:19:11,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:19:11,848 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-03 02:19:11,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:11,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854933931] [2022-11-03 02:19:11,849 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:19:11,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713024363] [2022-11-03 02:19:11,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713024363] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:19:11,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1460973920] [2022-11-03 02:19:11,853 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-03 02:19:11,854 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:19:11,855 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:19:11,856 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:19:11,856 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:19:13,105 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 18 for LOIs [2022-11-03 02:19:13,116 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 74 for LOIs [2022-11-03 02:19:13,140 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:19:14,778 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '948#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:19:14,778 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:19:14,779 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:19:14,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-11-03 02:19:14,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527193765] [2022-11-03 02:19:14,779 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:19:14,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:19:14,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:14,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:19:14,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-11-03 02:19:14,781 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 8 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-03 02:19:14,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:14,834 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-11-03 02:19:14,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:19:14,835 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 8 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) Word has length 38 [2022-11-03 02:19:14,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:14,836 INFO L225 Difference]: With dead ends: 34 [2022-11-03 02:19:14,836 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 02:19:14,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 87 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-11-03 02:19:14,839 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:14,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 44 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:19:14,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 02:19:14,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 02:19:14,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:14,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 02:19:14,843 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2022-11-03 02:19:14,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:14,843 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 02:19:14,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 8 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-03 02:19:14,846 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 02:19:14,846 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 02:19:14,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:19:14,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-03 02:19:15,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:19:15,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 02:19:15,238 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 02:19:15,239 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~k~0#1| 1))) (or (and .cse0 (<= |ULTIMATE.start_main_~c~0#1| 1) (<= 1 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~y~0#1| 1) (= (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (< 0 |ULTIMATE.start_main_~k~0#1|)) (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (= |ULTIMATE.start_main_~c~0#1| 0) .cse0 (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)))) [2022-11-03 02:19:15,239 INFO L899 garLoopResultBuilder]: For program point L29-1(lines 28 37) no Hoare annotation was computed. [2022-11-03 02:19:15,239 INFO L902 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: true [2022-11-03 02:19:15,239 INFO L895 garLoopResultBuilder]: At program point L21-1(line 21) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 1)) [2022-11-03 02:19:15,239 INFO L902 garLoopResultBuilder]: At program point L40(line 40) the Hoare annotation is: true [2022-11-03 02:19:15,239 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-03 02:19:15,239 INFO L895 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~k~0#1| 1))) (or (and .cse0 (<= |ULTIMATE.start_main_~c~0#1| 1) (<= 1 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~y~0#1| 1) (= (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (< 0 |ULTIMATE.start_main_~k~0#1|)) (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (= |ULTIMATE.start_main_~c~0#1| 0) .cse0 (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)))) [2022-11-03 02:19:15,240 INFO L895 garLoopResultBuilder]: At program point L28-3(lines 28 37) the Hoare annotation is: (or (and (<= |ULTIMATE.start_main_~k~0#1| 1) (<= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) (= (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (< 0 |ULTIMATE.start_main_~k~0#1|)) (and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0))) [2022-11-03 02:19:15,240 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2022-11-03 02:19:15,240 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (or (and (<= |ULTIMATE.start_main_~k~0#1| 1) (<= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) (= (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (< 0 |ULTIMATE.start_main_~k~0#1|)) (and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0))) [2022-11-03 02:19:15,240 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 6 8) the Hoare annotation is: true [2022-11-03 02:19:15,240 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2022-11-03 02:19:15,240 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2022-11-03 02:19:15,240 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2022-11-03 02:19:15,240 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2022-11-03 02:19:15,240 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2022-11-03 02:19:15,241 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2022-11-03 02:19:15,241 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2022-11-03 02:19:15,244 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-11-03 02:19:15,247 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:19:15,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:19:15 BoogieIcfgContainer [2022-11-03 02:19:15,261 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:19:15,261 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:19:15,262 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:19:15,262 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:19:15,262 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:17:45" (3/4) ... [2022-11-03 02:19:15,265 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 02:19:15,271 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-03 02:19:15,271 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-03 02:19:15,274 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-03 02:19:15,275 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-03 02:19:15,275 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-03 02:19:15,275 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 02:19:15,304 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 02:19:15,304 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:19:15,305 INFO L158 Benchmark]: Toolchain (without parser) took 90246.11ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 82.2MB in the beginning and 83.1MB in the end (delta: -892.2kB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2022-11-03 02:19:15,305 INFO L158 Benchmark]: CDTParser took 1.02ms. Allocated memory is still 121.6MB. Free memory was 99.0MB in the beginning and 98.9MB in the end (delta: 56.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:19:15,306 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.94ms. Allocated memory is still 121.6MB. Free memory was 82.0MB in the beginning and 97.2MB in the end (delta: -15.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 02:19:15,306 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.04ms. Allocated memory is still 121.6MB. Free memory was 97.2MB in the beginning and 95.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:19:15,306 INFO L158 Benchmark]: Boogie Preprocessor took 25.27ms. Allocated memory is still 121.6MB. Free memory was 95.5MB in the beginning and 94.4MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:19:15,307 INFO L158 Benchmark]: RCFGBuilder took 383.21ms. Allocated memory is still 121.6MB. Free memory was 94.4MB in the beginning and 83.2MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 02:19:15,307 INFO L158 Benchmark]: TraceAbstraction took 89429.90ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 82.5MB in the beginning and 85.2MB in the end (delta: -2.6MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2022-11-03 02:19:15,308 INFO L158 Benchmark]: Witness Printer took 42.99ms. Allocated memory is still 146.8MB. Free memory was 85.2MB in the beginning and 83.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:19:15,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02ms. Allocated memory is still 121.6MB. Free memory was 99.0MB in the beginning and 98.9MB in the end (delta: 56.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 319.94ms. Allocated memory is still 121.6MB. Free memory was 82.0MB in the beginning and 97.2MB in the end (delta: -15.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.04ms. Allocated memory is still 121.6MB. Free memory was 97.2MB in the beginning and 95.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.27ms. Allocated memory is still 121.6MB. Free memory was 95.5MB in the beginning and 94.4MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 383.21ms. Allocated memory is still 121.6MB. Free memory was 94.4MB in the beginning and 83.2MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 89429.90ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 82.5MB in the beginning and 85.2MB in the end (delta: -2.6MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. * Witness Printer took 42.99ms. Allocated memory is still 146.8MB. Free memory was 85.2MB in the beginning and 83.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 89.4s, OverallIterations: 5, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 72.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 72.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 237 SdHoareTripleChecker+Invalid, 72.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 179 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 178 IncrementalHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 80 mSDtfsCounter, 178 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 192 SyntacticMatches, 18 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 10.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=4, InterpolantAutomatonStates: 25, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 21 PreInvPairs, 30 NumberOfFragments, 251 HoareAnnotationTreeSize, 21 FomulaSimplifications, 12 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 66 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 166 ConstructedInterpolants, 0 QuantifiedInterpolants, 554 SizeOfPredicates, 5 NumberOfNonLiveVariables, 401 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 118/125 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: 28]: Loop Invariant Derived loop invariant: (((((k <= 1 && c <= 1) && 1 <= c) && y == 1) && 6 * (y * y * y * y * y) + 2 * (y * y * y * y * y * y) + 5 * (y * y * y * y) == x * 12 + y * y) && 0 < k) || ((((0 <= k && c == 0) && k <= 1) && y == 0) && x == 0) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-03 02:19:15,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5e30aa-917c-4af6-b535-d2a8045bfe36/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE