./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/mapsum3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/mapsum3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW --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 9b90ab1091eaaf5a02261d2d1915a4d1b86c95775292408734bcf8be79905641 --- 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-4e7fbc6 [2022-11-23 14:39:46,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:39:46,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:39:46,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:39:46,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:39:46,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:39:46,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:39:46,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:39:46,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:39:46,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:39:46,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:39:46,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:39:46,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:39:46,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:39:46,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:39:46,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:39:46,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:39:46,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:39:46,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:39:46,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:39:46,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:39:46,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:39:46,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:39:46,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:39:46,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:39:46,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:39:46,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:39:46,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:39:46,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:39:46,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:39:46,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:39:46,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:39:46,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:39:46,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:39:46,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:39:46,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:39:46,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:39:46,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:39:46,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:39:46,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:39:46,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:39:46,634 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:39:46,680 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:39:46,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:39:46,681 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:39:46,681 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:39:46,683 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:39:46,683 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:39:46,683 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:39:46,684 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:39:46,684 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:39:46,684 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:39:46,685 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:39:46,686 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:39:46,686 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:39:46,686 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:39:46,687 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:39:46,687 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:39:46,687 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:39:46,688 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:39:46,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:39:46,689 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:39:46,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:39:46,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:39:46,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:39:46,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:39:46,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:39:46,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:39:46,692 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:39:46,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:39:46,693 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:39:46,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:39:46,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:39:46,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:39:46,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:39:46,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:39:46,695 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:39:46,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:39:46,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:39:46,696 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:39:46,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:39:46,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:39:46,697 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:39:46,697 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_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b90ab1091eaaf5a02261d2d1915a4d1b86c95775292408734bcf8be79905641 [2022-11-23 14:39:47,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:39:47,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:39:47,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:39:47,059 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:39:47,060 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:39:47,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/array-crafted/mapsum3.i [2022-11-23 14:39:50,273 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:39:50,579 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:39:50,580 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/sv-benchmarks/c/array-crafted/mapsum3.i [2022-11-23 14:39:50,587 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/data/ee46f5cbd/cfa17f5cfe224d2e868c277932477bf0/FLAG63ba5efb2 [2022-11-23 14:39:50,605 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/data/ee46f5cbd/cfa17f5cfe224d2e868c277932477bf0 [2022-11-23 14:39:50,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:39:50,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:39:50,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:39:50,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:39:50,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:39:50,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:39:50" (1/1) ... [2022-11-23 14:39:50,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d97e9f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:50, skipping insertion in model container [2022-11-23 14:39:50,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:39:50" (1/1) ... [2022-11-23 14:39:50,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:39:50,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:39:50,817 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/sv-benchmarks/c/array-crafted/mapsum3.i[1312,1325] [2022-11-23 14:39:50,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:39:50,832 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:39:50,854 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/sv-benchmarks/c/array-crafted/mapsum3.i[1312,1325] [2022-11-23 14:39:50,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:39:50,871 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:39:50,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:50 WrapperNode [2022-11-23 14:39:50,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:39:50,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:39:50,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:39:50,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:39:50,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:50" (1/1) ... [2022-11-23 14:39:50,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:50" (1/1) ... [2022-11-23 14:39:50,912 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2022-11-23 14:39:50,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:39:50,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:39:50,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:39:50,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:39:50,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:50" (1/1) ... [2022-11-23 14:39:50,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:50" (1/1) ... [2022-11-23 14:39:50,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:50" (1/1) ... [2022-11-23 14:39:50,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:50" (1/1) ... [2022-11-23 14:39:50,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:50" (1/1) ... [2022-11-23 14:39:50,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:50" (1/1) ... [2022-11-23 14:39:50,967 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:50" (1/1) ... [2022-11-23 14:39:50,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:50" (1/1) ... [2022-11-23 14:39:50,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:39:50,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:39:50,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:39:50,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:39:50,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:50" (1/1) ... [2022-11-23 14:39:50,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:39:51,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:39:51,020 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:39:51,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:39:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:39:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2022-11-23 14:39:51,072 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2022-11-23 14:39:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:39:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:39:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:39:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:39:51,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:39:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:39:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:39:51,156 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:39:51,159 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:39:51,436 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:39:51,494 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:39:51,494 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-23 14:39:51,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:39:51 BoogieIcfgContainer [2022-11-23 14:39:51,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:39:51,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:39:51,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:39:51,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:39:51,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:39:50" (1/3) ... [2022-11-23 14:39:51,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796ae619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:39:51, skipping insertion in model container [2022-11-23 14:39:51,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:50" (2/3) ... [2022-11-23 14:39:51,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796ae619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:39:51, skipping insertion in model container [2022-11-23 14:39:51,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:39:51" (3/3) ... [2022-11-23 14:39:51,514 INFO L112 eAbstractionObserver]: Analyzing ICFG mapsum3.i [2022-11-23 14:39:51,536 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:39:51,536 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:39:51,611 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:39:51,621 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;@7ae51f6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:39:51,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:39:51,626 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:39:51,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 14:39:51,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:51,639 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:39:51,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:39:51,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:51,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1911737406, now seen corresponding path program 1 times [2022-11-23 14:39:51,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:51,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989518939] [2022-11-23 14:39:51,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:51,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:51,955 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:39:51,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:51,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989518939] [2022-11-23 14:39:51,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989518939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:39:51,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:39:51,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:39:51,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106726770] [2022-11-23 14:39:51,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:39:51,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:39:51,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:51,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:39:51,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:39:51,999 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 14:39:52,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:52,052 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2022-11-23 14:39:52,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:39:52,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2022-11-23 14:39:52,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:52,063 INFO L225 Difference]: With dead ends: 33 [2022-11-23 14:39:52,063 INFO L226 Difference]: Without dead ends: 16 [2022-11-23 14:39:52,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:39:52,070 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:52,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:39:52,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-23 14:39:52,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-23 14:39:52,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:39:52,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2022-11-23 14:39:52,113 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 20 [2022-11-23 14:39:52,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:52,114 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2022-11-23 14:39:52,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 14:39:52,115 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2022-11-23 14:39:52,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 14:39:52,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:52,117 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:39:52,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:39:52,118 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:39:52,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:52,119 INFO L85 PathProgramCache]: Analyzing trace with hash -242274518, now seen corresponding path program 1 times [2022-11-23 14:39:52,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:52,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928374079] [2022-11-23 14:39:52,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:52,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:52,408 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:39:52,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:52,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928374079] [2022-11-23 14:39:52,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928374079] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:39:52,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322697350] [2022-11-23 14:39:52,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:52,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:39:52,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:39:52,415 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:39:52,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:39:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:52,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:39:52,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:39:52,578 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:39:52,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:39:52,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322697350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:39:52,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:39:52,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-23 14:39:52,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128869142] [2022-11-23 14:39:52,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:39:52,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:39:52,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:52,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:39:52,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:39:52,593 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:39:52,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:52,635 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2022-11-23 14:39:52,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:39:52,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2022-11-23 14:39:52,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:52,645 INFO L225 Difference]: With dead ends: 29 [2022-11-23 14:39:52,646 INFO L226 Difference]: Without dead ends: 17 [2022-11-23 14:39:52,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:39:52,649 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:52,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:39:52,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-23 14:39:52,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-23 14:39:52,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:39:52,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-11-23 14:39:52,664 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 21 [2022-11-23 14:39:52,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:52,665 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-11-23 14:39:52,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:39:52,666 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-11-23 14:39:52,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-23 14:39:52,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:52,668 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:39:52,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:39:52,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:39:52,874 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:39:52,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:52,875 INFO L85 PathProgramCache]: Analyzing trace with hash 2071479167, now seen corresponding path program 1 times [2022-11-23 14:39:52,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:52,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453091604] [2022-11-23 14:39:52,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:52,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 14:39:53,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:53,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453091604] [2022-11-23 14:39:53,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453091604] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:39:53,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744813185] [2022-11-23 14:39:53,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:53,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:39:53,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:39:53,115 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:39:53,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:39:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:53,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:39:53,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:39:53,292 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 14:39:53,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:39:53,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744813185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:39:53,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:39:53,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-23 14:39:53,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314615435] [2022-11-23 14:39:53,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:39:53,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:39:53,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:53,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:39:53,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:39:53,295 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:39:53,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:53,325 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-11-23 14:39:53,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:39:53,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-11-23 14:39:53,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:53,327 INFO L225 Difference]: With dead ends: 27 [2022-11-23 14:39:53,328 INFO L226 Difference]: Without dead ends: 18 [2022-11-23 14:39:53,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:39:53,331 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:53,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:39:53,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-23 14:39:53,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-23 14:39:53,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:39:53,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-11-23 14:39:53,343 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 24 [2022-11-23 14:39:53,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:53,345 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-11-23 14:39:53,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:39:53,346 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-11-23 14:39:53,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-23 14:39:53,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:53,349 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:39:53,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:39:53,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:39:53,557 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:39:53,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:53,558 INFO L85 PathProgramCache]: Analyzing trace with hash -535158977, now seen corresponding path program 1 times [2022-11-23 14:39:53,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:53,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552078569] [2022-11-23 14:39:53,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:53,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 14:39:53,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:53,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552078569] [2022-11-23 14:39:53,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552078569] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:39:53,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256200437] [2022-11-23 14:39:53,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:53,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:39:53,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:39:53,741 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:39:53,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:39:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:53,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:39:53,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:39:53,893 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 14:39:53,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:39:53,931 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 14:39:53,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256200437] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:39:53,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [810100320] [2022-11-23 14:39:53,952 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-23 14:39:53,953 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:39:53,957 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:39:53,969 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:39:53,970 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:39:54,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:54,112 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:39:54,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-23 14:39:54,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:54,177 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:39:54,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-23 14:39:54,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:54,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:39:54,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:54,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:39:54,386 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-23 14:39:54,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2022-11-23 14:39:54,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 14:39:54,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:54,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-23 14:39:54,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:54,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-23 14:39:54,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:54,995 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-11-23 14:39:54,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2022-11-23 14:39:55,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-23 14:39:55,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:39:55,299 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-23 14:39:55,338 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:39:58,352 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '524#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 10000 |ULTIMATE.start_main_~i~1#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 9999 |ULTIMATE.start_main_~i~2#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 39996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_6 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_6 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_6 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_6 4294967296) (- 4294967296))))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:39:58,353 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:39:58,353 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:39:58,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2022-11-23 14:39:58,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595872537] [2022-11-23 14:39:58,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:39:58,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:39:58,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:58,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:39:58,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-23 14:39:58,355 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 14:39:58,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:58,396 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-11-23 14:39:58,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:39:58,397 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 25 [2022-11-23 14:39:58,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:58,397 INFO L225 Difference]: With dead ends: 36 [2022-11-23 14:39:58,398 INFO L226 Difference]: Without dead ends: 21 [2022-11-23 14:39:58,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-23 14:39:58,399 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:58,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:39:58,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-23 14:39:58,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-23 14:39:58,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:39:58,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-11-23 14:39:58,405 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2022-11-23 14:39:58,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:58,405 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-11-23 14:39:58,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 14:39:58,405 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-11-23 14:39:58,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-23 14:39:58,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:58,406 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:39:58,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:39:58,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:39:58,615 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:39:58,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:58,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1059918509, now seen corresponding path program 2 times [2022-11-23 14:39:58,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:58,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964914497] [2022-11-23 14:39:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:58,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:58,725 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 14:39:58,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:58,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964914497] [2022-11-23 14:39:58,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964914497] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:39:58,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548381664] [2022-11-23 14:39:58,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:39:58,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:39:58,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:39:58,727 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:39:58,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:39:58,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 14:39:58,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:39:58,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:39:58,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:39:58,831 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 14:39:58,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:39:58,871 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 14:39:58,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548381664] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:39:58,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [602748933] [2022-11-23 14:39:58,878 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-23 14:39:58,878 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:39:58,879 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:39:58,879 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:39:58,879 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:39:58,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:58,925 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:39:58,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-23 14:39:58,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:58,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 14:39:58,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:58,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-23 14:39:59,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:59,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:59,029 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-23 14:39:59,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2022-11-23 14:39:59,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 14:39:59,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:59,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-23 14:39:59,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:59,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:39:59,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-23 14:39:59,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:59,327 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-23 14:39:59,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-23 14:39:59,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-23 14:39:59,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:39:59,509 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-23 14:39:59,544 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:40:02,670 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '797#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 10000 |ULTIMATE.start_main_~i~1#1|) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= 9999 |ULTIMATE.start_main_~i~2#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 39996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_12 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_12 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_12 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_12 4294967296) (- 4294967296))))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-23 14:40:02,671 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:40:02,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:40:02,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-23 14:40:02,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381900001] [2022-11-23 14:40:02,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:40:02,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:40:02,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:40:02,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:40:02,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-23 14:40:02,673 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 14:40:02,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:40:02,715 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2022-11-23 14:40:02,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:40:02,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 28 [2022-11-23 14:40:02,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:40:02,716 INFO L225 Difference]: With dead ends: 38 [2022-11-23 14:40:02,718 INFO L226 Difference]: Without dead ends: 24 [2022-11-23 14:40:02,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-23 14:40:02,719 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:40:02,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:40:02,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-23 14:40:02,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-23 14:40:02,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:40:02,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-23 14:40:02,738 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 28 [2022-11-23 14:40:02,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:40:02,739 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-23 14:40:02,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 14:40:02,739 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-23 14:40:02,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-23 14:40:02,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:40:02,741 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:40:02,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:40:02,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:40:02,942 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:40:02,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:40:02,942 INFO L85 PathProgramCache]: Analyzing trace with hash 301103478, now seen corresponding path program 3 times [2022-11-23 14:40:02,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:40:02,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290636949] [2022-11-23 14:40:02,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:02,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:40:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:40:03,061 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-23 14:40:03,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:40:03,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290636949] [2022-11-23 14:40:03,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290636949] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:40:03,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271741014] [2022-11-23 14:40:03,062 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:40:03,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:40:03,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:40:03,064 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:40:03,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 14:40:03,197 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:40:03,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:40:03,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 14:40:03,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:40:03,255 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-23 14:40:03,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:40:03,344 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-23 14:40:03,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271741014] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:40:03,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2108734918] [2022-11-23 14:40:03,348 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-23 14:40:03,348 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:40:03,349 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:40:03,349 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:40:03,349 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:40:03,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:03,380 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:40:03,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-23 14:40:03,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:03,412 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:40:03,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-23 14:40:03,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:03,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:40:03,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:03,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:40:03,515 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-23 14:40:03,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2022-11-23 14:40:03,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 14:40:03,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:03,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-23 14:40:03,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:03,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:40:03,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-23 14:40:03,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:03,852 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-23 14:40:03,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-23 14:40:03,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-23 14:40:03,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:40:04,025 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-23 14:40:04,066 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:40:07,350 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1141#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 10000 |ULTIMATE.start_main_~i~1#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 9999 |ULTIMATE.start_main_~i~2#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 39996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_18 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_18 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_18 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_18 4294967296) (- 4294967296))))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:40:07,350 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:40:07,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:40:07,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2022-11-23 14:40:07,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188269326] [2022-11-23 14:40:07,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:40:07,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 14:40:07,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:40:07,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 14:40:07,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2022-11-23 14:40:07,352 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 14:40:07,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:40:07,417 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2022-11-23 14:40:07,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 14:40:07,418 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 37 [2022-11-23 14:40:07,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:40:07,418 INFO L225 Difference]: With dead ends: 49 [2022-11-23 14:40:07,418 INFO L226 Difference]: Without dead ends: 31 [2022-11-23 14:40:07,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2022-11-23 14:40:07,420 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:40:07,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:40:07,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-23 14:40:07,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-23 14:40:07,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:40:07,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-11-23 14:40:07,426 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2022-11-23 14:40:07,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:40:07,426 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-11-23 14:40:07,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 14:40:07,426 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-11-23 14:40:07,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-23 14:40:07,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:40:07,427 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:40:07,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 14:40:07,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:40:07,639 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:40:07,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:40:07,639 INFO L85 PathProgramCache]: Analyzing trace with hash 884522878, now seen corresponding path program 4 times [2022-11-23 14:40:07,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:40:07,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860623693] [2022-11-23 14:40:07,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:07,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:40:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:40:08,034 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-23 14:40:08,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:40:08,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860623693] [2022-11-23 14:40:08,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860623693] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:40:08,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765621068] [2022-11-23 14:40:08,035 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 14:40:08,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:40:08,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:40:08,037 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:40:08,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 14:40:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:40:08,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 14:40:08,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:40:08,233 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-23 14:40:08,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:40:08,527 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-23 14:40:08,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765621068] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:40:08,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1032631554] [2022-11-23 14:40:08,530 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-23 14:40:08,530 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:40:08,530 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:40:08,530 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:40:08,531 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:40:08,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:08,560 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:40:08,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-23 14:40:08,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:08,590 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:40:08,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-23 14:40:08,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:08,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-23 14:40:08,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:08,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:08,685 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-23 14:40:08,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2022-11-23 14:40:08,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 14:40:08,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:08,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-23 14:40:09,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:09,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:40:09,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-23 14:40:09,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:09,056 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-23 14:40:09,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-23 14:40:09,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-23 14:40:09,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:40:09,243 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-23 14:40:09,277 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:40:12,430 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1574#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_23 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_23 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_23 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_23 4294967296) (- 4294967296))))) (<= 10000 |ULTIMATE.start_main_~i~1#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 9999 |ULTIMATE.start_main_~i~2#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 39996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:40:12,430 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:40:12,431 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:40:12,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2022-11-23 14:40:12,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072518006] [2022-11-23 14:40:12,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:40:12,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 14:40:12,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:40:12,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 14:40:12,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2022-11-23 14:40:12,434 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 14:40:12,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:40:12,548 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2022-11-23 14:40:12,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 14:40:12,549 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2022-11-23 14:40:12,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:40:12,550 INFO L225 Difference]: With dead ends: 62 [2022-11-23 14:40:12,550 INFO L226 Difference]: Without dead ends: 43 [2022-11-23 14:40:12,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2022-11-23 14:40:12,552 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:40:12,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:40:12,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-23 14:40:12,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-23 14:40:12,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:40:12,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-11-23 14:40:12,560 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 44 [2022-11-23 14:40:12,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:40:12,561 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-11-23 14:40:12,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 14:40:12,561 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-11-23 14:40:12,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-23 14:40:12,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:40:12,563 INFO L195 NwaCegarLoop]: trace histogram [22, 12, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:40:12,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 14:40:12,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:40:12,772 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:40:12,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:40:12,772 INFO L85 PathProgramCache]: Analyzing trace with hash -49590146, now seen corresponding path program 5 times [2022-11-23 14:40:12,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:40:12,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122736061] [2022-11-23 14:40:12,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:12,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:40:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:40:13,620 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-23 14:40:13,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:40:13,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122736061] [2022-11-23 14:40:13,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122736061] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:40:13,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772892239] [2022-11-23 14:40:13,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:40:13,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:40:13,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:40:13,625 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:40:13,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 14:40:13,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-23 14:40:13,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:40:13,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 14:40:13,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:40:13,998 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-11-23 14:40:13,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:40:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-11-23 14:40:14,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772892239] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:40:14,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [725436228] [2022-11-23 14:40:14,175 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-23 14:40:14,176 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:40:14,176 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:40:14,176 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:40:14,177 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:40:14,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:14,206 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:40:14,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-23 14:40:14,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:14,239 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:40:14,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-23 14:40:14,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:14,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-23 14:40:14,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:14,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:14,327 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-23 14:40:14,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2022-11-23 14:40:14,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 14:40:14,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:14,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-23 14:40:14,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:14,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-23 14:40:14,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:14,575 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-11-23 14:40:14,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2022-11-23 14:40:14,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-23 14:40:14,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:40:14,822 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-23 14:40:14,853 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:40:18,343 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2139#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 10000 |ULTIMATE.start_main_~i~1#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_30 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_30 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_30 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_30 4294967296) (- 4294967296))))) (<= 9999 |ULTIMATE.start_main_~i~2#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 39996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:40:18,343 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:40:18,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:40:18,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 35 [2022-11-23 14:40:18,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444098961] [2022-11-23 14:40:18,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:40:18,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-23 14:40:18,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:40:18,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-23 14:40:18,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=1831, Unknown=0, NotChecked=0, Total=2256 [2022-11-23 14:40:18,347 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 14:40:18,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:40:18,497 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2022-11-23 14:40:18,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-23 14:40:18,500 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-11-23 14:40:18,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:40:18,504 INFO L225 Difference]: With dead ends: 69 [2022-11-23 14:40:18,504 INFO L226 Difference]: Without dead ends: 50 [2022-11-23 14:40:18,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=425, Invalid=1831, Unknown=0, NotChecked=0, Total=2256 [2022-11-23 14:40:18,507 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:40:18,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:40:18,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-23 14:40:18,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-11-23 14:40:18,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:40:18,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2022-11-23 14:40:18,530 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 56 [2022-11-23 14:40:18,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:40:18,531 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2022-11-23 14:40:18,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 14:40:18,532 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2022-11-23 14:40:18,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-23 14:40:18,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:40:18,535 INFO L195 NwaCegarLoop]: trace histogram [30, 23, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:40:18,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 14:40:18,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:40:18,749 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:40:18,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:40:18,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1858566262, now seen corresponding path program 6 times [2022-11-23 14:40:18,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:40:18,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746503497] [2022-11-23 14:40:18,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:18,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:40:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:40:19,773 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-23 14:40:19,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:40:19,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746503497] [2022-11-23 14:40:19,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746503497] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:40:19,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499084734] [2022-11-23 14:40:19,773 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:40:19,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:40:19,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:40:19,775 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:40:19,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 14:40:19,942 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:40:19,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:40:19,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-23 14:40:19,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:40:20,020 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-23 14:40:20,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:40:21,128 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-23 14:40:21,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499084734] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:40:21,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1488279470] [2022-11-23 14:40:21,131 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-23 14:40:21,131 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:40:21,132 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:40:21,132 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:40:21,132 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:40:21,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:21,181 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:40:21,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-23 14:40:21,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:21,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 14:40:21,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:21,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-23 14:40:21,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:21,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:21,286 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-23 14:40:21,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2022-11-23 14:40:21,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 14:40:21,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:21,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-23 14:40:21,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:21,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-23 14:40:21,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:21,587 INFO L321 Elim1Store]: treesize reduction 40, result has 42.0 percent of original size [2022-11-23 14:40:21,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 85 [2022-11-23 14:40:21,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-23 14:40:21,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:40:21,779 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-23 14:40:21,813 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:40:27,257 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2862#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 10000 |ULTIMATE.start_main_~i~1#1|) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= 9999 |ULTIMATE.start_main_~i~2#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 39996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:40:27,257 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:40:27,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:40:27,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 26] total 51 [2022-11-23 14:40:27,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513460602] [2022-11-23 14:40:27,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:40:27,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-23 14:40:27,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:40:27,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-23 14:40:27,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1334, Invalid=2697, Unknown=1, NotChecked=0, Total=4032 [2022-11-23 14:40:27,262 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 14:40:27,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:40:27,415 INFO L93 Difference]: Finished difference Result 100 states and 132 transitions. [2022-11-23 14:40:27,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-23 14:40:27,416 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 75 [2022-11-23 14:40:27,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:40:27,417 INFO L225 Difference]: With dead ends: 100 [2022-11-23 14:40:27,417 INFO L226 Difference]: Without dead ends: 75 [2022-11-23 14:40:27,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1334, Invalid=2697, Unknown=1, NotChecked=0, Total=4032 [2022-11-23 14:40:27,419 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:40:27,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:40:27,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-23 14:40:27,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-11-23 14:40:27,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:40:27,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2022-11-23 14:40:27,427 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 75 [2022-11-23 14:40:27,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:40:27,428 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2022-11-23 14:40:27,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 14:40:27,428 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2022-11-23 14:40:27,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-23 14:40:27,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:40:27,430 INFO L195 NwaCegarLoop]: trace histogram [48, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:40:27,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 14:40:27,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 14:40:27,637 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:40:27,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:40:27,637 INFO L85 PathProgramCache]: Analyzing trace with hash -248124130, now seen corresponding path program 7 times [2022-11-23 14:40:27,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:40:27,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144535156] [2022-11-23 14:40:27,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:27,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:40:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:40:30,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-23 14:40:30,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:40:30,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144535156] [2022-11-23 14:40:30,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144535156] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:40:30,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269602567] [2022-11-23 14:40:30,552 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 14:40:30,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:40:30,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:40:30,553 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:40:30,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 14:40:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:40:30,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-23 14:40:30,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:40:30,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-23 14:40:30,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:40:34,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-23 14:40:34,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269602567] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:40:34,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1827173943] [2022-11-23 14:40:34,430 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-23 14:40:34,430 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:40:34,430 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:40:34,431 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:40:34,431 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:40:34,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:34,471 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:40:34,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-23 14:40:34,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:34,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 14:40:34,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:34,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:40:34,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:34,538 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:40:34,564 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-23 14:40:34,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2022-11-23 14:40:34,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 14:40:34,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:34,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-23 14:40:34,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:34,810 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:40:34,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-23 14:40:34,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:34,847 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-23 14:40:34,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-23 14:40:34,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-23 14:40:34,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:40:35,014 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-23 14:40:35,041 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:40:40,623 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3897#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 10000 |ULTIMATE.start_main_~i~1#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 9999 |ULTIMATE.start_main_~i~2#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 39996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_42 Int)) (= (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_42 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_42 4294967296) (+ (- 4294967296) (mod v_mapsum_~ret~0_BEFORE_RETURN_42 4294967296))) |ULTIMATE.start_main_~ret5~0#1|)) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:40:40,623 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:40:40,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:40:40,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 51] total 101 [2022-11-23 14:40:40,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988538999] [2022-11-23 14:40:40,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:40:40,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-11-23 14:40:40,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:40:40,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-11-23 14:40:40,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5110, Invalid=7772, Unknown=0, NotChecked=0, Total=12882 [2022-11-23 14:40:40,631 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 14:40:40,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:40:40,861 INFO L93 Difference]: Finished difference Result 150 states and 207 transitions. [2022-11-23 14:40:40,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-11-23 14:40:40,862 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 100 [2022-11-23 14:40:40,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:40:40,865 INFO L225 Difference]: With dead ends: 150 [2022-11-23 14:40:40,865 INFO L226 Difference]: Without dead ends: 125 [2022-11-23 14:40:40,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2138 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=5110, Invalid=7772, Unknown=0, NotChecked=0, Total=12882 [2022-11-23 14:40:40,872 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:40:40,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:40:40,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-23 14:40:40,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-11-23 14:40:40,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.025) internal successors, (123), 120 states have internal predecessors, (123), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:40:40,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2022-11-23 14:40:40,906 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 100 [2022-11-23 14:40:40,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:40:40,907 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2022-11-23 14:40:40,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 14:40:40,908 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2022-11-23 14:40:40,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-23 14:40:40,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:40:40,910 INFO L195 NwaCegarLoop]: trace histogram [98, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:40:40,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 14:40:41,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:40:41,115 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:40:41,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:40:41,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1563397790, now seen corresponding path program 8 times [2022-11-23 14:40:41,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:40:41,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419277254] [2022-11-23 14:40:41,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:41,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:40:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:40:48,875 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-23 14:40:48,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:40:48,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419277254] [2022-11-23 14:40:48,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419277254] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:40:48,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018851771] [2022-11-23 14:40:48,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:40:48,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:40:48,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:40:48,876 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:40:48,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 14:40:49,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-23 14:40:49,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:40:49,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:40:49,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:40:49,233 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 246 proven. 3 refuted. 0 times theorem prover too weak. 5139 trivial. 0 not checked. [2022-11-23 14:40:49,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:40:49,395 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5385 trivial. 0 not checked. [2022-11-23 14:40:49,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018851771] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:40:49,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1134268352] [2022-11-23 14:40:49,398 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-23 14:40:49,398 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:40:49,399 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:40:49,399 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:40:49,399 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:40:49,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:49,433 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:40:49,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-23 14:40:49,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:49,460 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:40:49,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-23 14:40:49,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:49,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-23 14:40:49,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:49,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:49,541 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-23 14:40:49,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2022-11-23 14:40:49,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 14:40:49,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:49,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-23 14:40:49,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:49,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:40:49,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-23 14:40:49,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:40:49,757 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-23 14:40:49,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-23 14:40:49,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-23 14:40:49,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:40:49,934 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-23 14:40:49,965 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:40:56,169 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5438#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 10000 |ULTIMATE.start_main_~i~1#1|) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_48 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_48 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_48 4294967296) (+ (- 4294967296) (mod v_mapsum_~ret~0_BEFORE_RETURN_48 4294967296))))) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 9999 |ULTIMATE.start_main_~i~2#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 39996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:40:56,169 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:40:56,169 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:40:56,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 5, 5] total 107 [2022-11-23 14:40:56,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725551203] [2022-11-23 14:40:56,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:40:56,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-11-23 14:40:56,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:40:56,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-11-23 14:40:56,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5137, Invalid=9143, Unknown=0, NotChecked=0, Total=14280 [2022-11-23 14:40:56,176 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 14:40:56,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:40:56,367 INFO L93 Difference]: Finished difference Result 155 states and 167 transitions. [2022-11-23 14:40:56,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-11-23 14:40:56,368 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 150 [2022-11-23 14:40:56,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:40:56,370 INFO L225 Difference]: With dead ends: 155 [2022-11-23 14:40:56,370 INFO L226 Difference]: Without dead ends: 130 [2022-11-23 14:40:56,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1988 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=5137, Invalid=9143, Unknown=0, NotChecked=0, Total=14280 [2022-11-23 14:40:56,375 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:40:56,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:40:56,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-23 14:40:56,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-11-23 14:40:56,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.024) internal successors, (128), 125 states have internal predecessors, (128), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:40:56,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 134 transitions. [2022-11-23 14:40:56,394 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 134 transitions. Word has length 150 [2022-11-23 14:40:56,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:40:56,395 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 134 transitions. [2022-11-23 14:40:56,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 14:40:56,395 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 134 transitions. [2022-11-23 14:40:56,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-23 14:40:56,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:40:56,397 INFO L195 NwaCegarLoop]: trace histogram [99, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:40:56,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 14:40:56,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:40:56,603 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:40:56,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:40:56,604 INFO L85 PathProgramCache]: Analyzing trace with hash 109612682, now seen corresponding path program 9 times [2022-11-23 14:40:56,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:40:56,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215672391] [2022-11-23 14:40:56,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:56,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:40:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:04,330 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-23 14:41:04,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:41:04,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215672391] [2022-11-23 14:41:04,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215672391] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:41:04,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324966770] [2022-11-23 14:41:04,331 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:41:04,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:41:04,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:41:04,332 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:41:04,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 14:41:04,685 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:41:04,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:41:04,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 101 conjunts are in the unsatisfiable core [2022-11-23 14:41:04,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:04,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-23 14:41:04,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:41:18,084 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-23 14:41:18,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324966770] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:41:18,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [234485422] [2022-11-23 14:41:18,086 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-23 14:41:18,087 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:41:18,087 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:41:18,087 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:41:18,087 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:41:18,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:41:18,117 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:41:18,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-23 14:41:18,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:41:18,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 14:41:18,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:41:18,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-23 14:41:18,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:41:18,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:41:18,193 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-23 14:41:18,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2022-11-23 14:41:18,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 14:41:18,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:41:18,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-23 14:41:18,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:41:18,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:41:18,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-23 14:41:18,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:41:18,408 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-23 14:41:18,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-23 14:41:18,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-23 14:41:18,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:41:18,536 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-23 14:41:18,561 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:41:22,765 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7125#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 10000 |ULTIMATE.start_main_~i~1#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 9999 |ULTIMATE.start_main_~i~2#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 39996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_53 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_53 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_53 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_53 4294967296) (- 4294967296))))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:41:22,765 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:41:22,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:41:22,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101, 102] total 203 [2022-11-23 14:41:22,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110175331] [2022-11-23 14:41:22,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:41:22,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2022-11-23 14:41:22,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:41:22,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2022-11-23 14:41:22,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20563, Invalid=25877, Unknown=0, NotChecked=0, Total=46440 [2022-11-23 14:41:22,777 INFO L87 Difference]: Start difference. First operand 130 states and 134 transitions. Second operand has 203 states, 203 states have (on average 1.0689655172413792) internal successors, (217), 203 states have internal predecessors, (217), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 14:41:23,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:23,416 INFO L93 Difference]: Finished difference Result 260 states and 368 transitions. [2022-11-23 14:41:23,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2022-11-23 14:41:23,417 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 1.0689655172413792) internal successors, (217), 203 states have internal predecessors, (217), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 155 [2022-11-23 14:41:23,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:23,418 INFO L225 Difference]: With dead ends: 260 [2022-11-23 14:41:23,418 INFO L226 Difference]: Without dead ends: 231 [2022-11-23 14:41:23,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4331 ImplicationChecksByTransitivity, 21.8s TimeCoverageRelationStatistics Valid=20563, Invalid=25877, Unknown=0, NotChecked=0, Total=46440 [2022-11-23 14:41:23,423 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:23,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:41:23,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-23 14:41:23,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2022-11-23 14:41:23,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 226 states have (on average 1.0132743362831858) internal successors, (229), 226 states have internal predecessors, (229), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:41:23,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 235 transitions. [2022-11-23 14:41:23,438 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 235 transitions. Word has length 155 [2022-11-23 14:41:23,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:23,438 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 235 transitions. [2022-11-23 14:41:23,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 1.0689655172413792) internal successors, (217), 203 states have internal predecessors, (217), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 14:41:23,439 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 235 transitions. [2022-11-23 14:41:23,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-23 14:41:23,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:23,442 INFO L195 NwaCegarLoop]: trace histogram [200, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:41:23,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 14:41:23,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 14:41:23,647 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:41:23,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:23,648 INFO L85 PathProgramCache]: Analyzing trace with hash -137040610, now seen corresponding path program 10 times [2022-11-23 14:41:23,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:41:23,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883408755] [2022-11-23 14:41:23,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:23,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:41:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 20655 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-23 14:41:50,302 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:41:50,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883408755] [2022-11-23 14:41:50,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883408755] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:41:50,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940754860] [2022-11-23 14:41:50,303 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 14:41:50,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:41:50,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:41:50,315 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:41:50,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 14:41:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:50,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 2116 conjuncts, 202 conjunts are in the unsatisfiable core [2022-11-23 14:41:50,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:51,350 INFO L134 CoverageAnalysis]: Checked inductivity of 20655 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-23 14:41:51,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:42:43,415 INFO L134 CoverageAnalysis]: Checked inductivity of 20655 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-23 14:42:43,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940754860] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:42:43,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [571997791] [2022-11-23 14:42:43,417 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-23 14:42:43,417 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:42:43,418 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:42:43,418 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:42:43,418 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:42:43,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:42:43,443 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:42:43,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-23 14:42:43,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:42:43,467 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:42:43,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-23 14:42:43,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:42:43,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:42:43,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:42:43,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:42:43,545 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-23 14:42:43,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2022-11-23 14:42:43,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 14:42:43,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:42:43,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-23 14:42:43,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:42:43,736 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:42:43,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-23 14:42:43,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:42:43,778 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-23 14:42:43,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-23 14:42:43,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-23 14:42:43,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:42:43,915 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-23 14:42:43,943 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:42:49,484 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10032#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 10000 |ULTIMATE.start_main_~i~1#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_59 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_59 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_59 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_59 4294967296) (- 4294967296))))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 9999 |ULTIMATE.start_main_~i~2#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 39996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:42:49,484 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:42:49,484 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:42:49,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [203, 202, 203] total 405 [2022-11-23 14:42:49,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714675235] [2022-11-23 14:42:49,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:42:49,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 405 states [2022-11-23 14:42:49,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:42:49,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 405 interpolants. [2022-11-23 14:42:49,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81870, Invalid=92436, Unknown=0, NotChecked=0, Total=174306 [2022-11-23 14:42:49,505 INFO L87 Difference]: Start difference. First operand 231 states and 235 transitions. Second operand has 405 states, 405 states have (on average 1.0345679012345679) internal successors, (419), 405 states have internal predecessors, (419), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 14:42:52,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:42:52,099 INFO L93 Difference]: Finished difference Result 462 states and 671 transitions. [2022-11-23 14:42:52,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 404 states. [2022-11-23 14:42:52,100 INFO L78 Accepts]: Start accepts. Automaton has has 405 states, 405 states have (on average 1.0345679012345679) internal successors, (419), 405 states have internal predecessors, (419), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 256 [2022-11-23 14:42:52,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:42:52,103 INFO L225 Difference]: With dead ends: 462 [2022-11-23 14:42:52,103 INFO L226 Difference]: Without dead ends: 433 [2022-11-23 14:42:52,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 969 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 416 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8674 ImplicationChecksByTransitivity, 74.5s TimeCoverageRelationStatistics Valid=81870, Invalid=92436, Unknown=0, NotChecked=0, Total=174306 [2022-11-23 14:42:52,112 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:42:52,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:42:52,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-11-23 14:42:52,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2022-11-23 14:42:52,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 428 states have (on average 1.0070093457943925) internal successors, (431), 428 states have internal predecessors, (431), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:42:52,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 437 transitions. [2022-11-23 14:42:52,133 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 437 transitions. Word has length 256 [2022-11-23 14:42:52,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:42:52,134 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 437 transitions. [2022-11-23 14:42:52,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 405 states, 405 states have (on average 1.0345679012345679) internal successors, (419), 405 states have internal predecessors, (419), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 14:42:52,135 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 437 transitions. [2022-11-23 14:42:52,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2022-11-23 14:42:52,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:52,144 INFO L195 NwaCegarLoop]: trace histogram [402, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:42:52,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-23 14:42:52,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-23 14:42:52,352 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:42:52,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:52,353 INFO L85 PathProgramCache]: Analyzing trace with hash 11194526, now seen corresponding path program 11 times [2022-11-23 14:42:52,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:42:52,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625378445] [2022-11-23 14:42:52,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:52,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:42:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:44:39,263 INFO L134 CoverageAnalysis]: Checked inductivity of 81558 backedges. 0 proven. 81003 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-23 14:44:39,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:44:39,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625378445] [2022-11-23 14:44:39,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625378445] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:44:39,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458353924] [2022-11-23 14:44:39,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:44:39,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:44:39,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:44:39,271 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:44:39,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 14:44:39,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-23 14:44:39,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:44:39,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 14:44:39,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:44:41,188 INFO L134 CoverageAnalysis]: Checked inductivity of 81558 backedges. 246 proven. 21 refuted. 0 times theorem prover too weak. 81291 trivial. 0 not checked. [2022-11-23 14:44:41,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:44:42,567 INFO L134 CoverageAnalysis]: Checked inductivity of 81558 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 81537 trivial. 0 not checked. [2022-11-23 14:44:42,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458353924] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:44:42,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1397299616] [2022-11-23 14:44:42,569 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-23 14:44:42,569 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:44:42,570 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:44:42,570 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:44:42,570 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:44:42,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:44:42,603 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:44:42,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-23 14:44:42,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:44:42,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 14:44:42,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:44:42,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:44:42,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:44:42,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:44:42,693 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-23 14:44:42,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2022-11-23 14:44:42,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 14:44:42,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:44:42,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-23 14:44:42,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:44:42,866 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:44:42,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-23 14:44:42,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:44:42,908 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-23 14:44:42,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-23 14:44:42,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-23 14:44:42,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:44:43,029 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-23 14:44:43,055 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:44:51,250 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14973#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 10000 |ULTIMATE.start_main_~i~1#1|) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_65 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_65 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_65 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_65 4294967296) (- 4294967296))))) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 9999 |ULTIMATE.start_main_~i~2#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 39996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:44:51,250 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:44:51,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:44:51,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [405, 9, 9] total 419 [2022-11-23 14:44:51,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183676353] [2022-11-23 14:44:51,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:44:51,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 419 states [2022-11-23 14:44:51,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:44:51,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 419 interpolants. [2022-11-23 14:44:51,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81989, Invalid=104203, Unknown=0, NotChecked=0, Total=186192 [2022-11-23 14:44:51,271 INFO L87 Difference]: Start difference. First operand 433 states and 437 transitions. Second operand has 419 states, 419 states have (on average 1.0429594272076372) internal successors, (437), 419 states have internal predecessors, (437), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 14:44:53,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:44:53,884 INFO L93 Difference]: Finished difference Result 471 states and 487 transitions. [2022-11-23 14:44:53,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 419 states. [2022-11-23 14:44:53,885 INFO L78 Accepts]: Start accepts. Automaton has has 419 states, 419 states have (on average 1.0429594272076372) internal successors, (437), 419 states have internal predecessors, (437), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 458 [2022-11-23 14:44:53,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:44:53,888 INFO L225 Difference]: With dead ends: 471 [2022-11-23 14:44:53,888 INFO L226 Difference]: Without dead ends: 442 [2022-11-23 14:44:53,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1777 GetRequests, 1347 SyntacticMatches, 0 SemanticMatches, 430 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11136 ImplicationChecksByTransitivity, 81.1s TimeCoverageRelationStatistics Valid=81989, Invalid=104203, Unknown=0, NotChecked=0, Total=186192 [2022-11-23 14:44:53,900 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:44:53,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 150 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:44:53,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-11-23 14:44:53,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2022-11-23 14:44:53,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 437 states have (on average 1.0068649885583525) internal successors, (440), 437 states have internal predecessors, (440), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:44:53,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 446 transitions. [2022-11-23 14:44:53,921 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 446 transitions. Word has length 458 [2022-11-23 14:44:53,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:44:53,922 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 446 transitions. [2022-11-23 14:44:53,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 419 states, 419 states have (on average 1.0429594272076372) internal successors, (437), 419 states have internal predecessors, (437), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 14:44:53,923 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 446 transitions. [2022-11-23 14:44:53,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2022-11-23 14:44:53,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:44:53,933 INFO L195 NwaCegarLoop]: trace histogram [403, 30, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:44:53,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-23 14:44:54,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 14:44:54,140 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:44:54,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:44:54,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1121507978, now seen corresponding path program 12 times [2022-11-23 14:44:54,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:44:54,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144023096] [2022-11-23 14:44:54,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:44:54,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:44:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:46:38,537 INFO L134 CoverageAnalysis]: Checked inductivity of 82045 backedges. 0 proven. 81406 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2022-11-23 14:46:38,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:46:38,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144023096] [2022-11-23 14:46:38,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144023096] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:46:38,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973166822] [2022-11-23 14:46:38,537 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:46:38,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:46:38,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:46:38,540 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:46:38,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 14:46:39,611 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:46:39,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:46:39,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 3999 conjuncts, 405 conjunts are in the unsatisfiable core [2022-11-23 14:46:39,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:46:40,476 INFO L134 CoverageAnalysis]: Checked inductivity of 82045 backedges. 0 proven. 81406 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2022-11-23 14:46:40,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:50:44,870 INFO L134 CoverageAnalysis]: Checked inductivity of 82045 backedges. 0 proven. 81406 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2022-11-23 14:50:44,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973166822] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:50:44,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1338279842] [2022-11-23 14:50:44,873 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-23 14:50:44,873 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:50:44,874 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:50:44,874 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:50:44,874 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:50:44,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:50:44,901 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:50:44,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-23 14:50:44,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:50:44,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 14:50:44,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:50:44,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:50:44,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:50:44,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:50:44,987 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-23 14:50:44,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2022-11-23 14:50:45,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 14:50:45,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:50:45,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-23 14:50:45,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:50:45,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-23 14:50:45,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:50:45,216 INFO L321 Elim1Store]: treesize reduction 40, result has 42.0 percent of original size [2022-11-23 14:50:45,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 85 [2022-11-23 14:50:45,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-23 14:50:45,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:50:45,360 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-23 14:50:45,387 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:50:57,660 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 53 DAG size of output: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:51:05,044 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20396#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 10000 |ULTIMATE.start_main_~i~1#1|) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= 9999 |ULTIMATE.start_main_~i~2#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 39996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-23 14:51:05,044 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:51:05,044 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:51:05,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [406, 405, 406] total 811 [2022-11-23 14:51:05,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351212913] [2022-11-23 14:51:05,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:51:05,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 811 states [2022-11-23 14:51:05,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:51:05,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 811 interpolants. [2022-11-23 14:51:05,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328514, Invalid=349637, Unknown=1, NotChecked=0, Total=678152 [2022-11-23 14:51:05,177 INFO L87 Difference]: Start difference. First operand 442 states and 446 transitions. Second operand has 811 states, 811 states have (on average 1.0172626387176325) internal successors, (825), 811 states have internal predecessors, (825), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 14:51:24,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:51:24,891 INFO L93 Difference]: Finished difference Result 884 states and 1296 transitions. [2022-11-23 14:51:24,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 810 states. [2022-11-23 14:51:24,893 INFO L78 Accepts]: Start accepts. Automaton has has 811 states, 811 states have (on average 1.0172626387176325) internal successors, (825), 811 states have internal predecessors, (825), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 467 [2022-11-23 14:51:24,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:51:24,897 INFO L225 Difference]: With dead ends: 884 [2022-11-23 14:51:24,898 INFO L226 Difference]: Without dead ends: 847 [2022-11-23 14:51:24,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1805 GetRequests, 983 SyntacticMatches, 0 SemanticMatches, 822 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17403 ImplicationChecksByTransitivity, 332.4s TimeCoverageRelationStatistics Valid=328514, Invalid=349637, Unknown=1, NotChecked=0, Total=678152 [2022-11-23 14:51:24,968 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:51:24,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 14:51:24,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-11-23 14:51:25,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2022-11-23 14:51:25,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 842 states have (on average 1.003562945368171) internal successors, (845), 842 states have internal predecessors, (845), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:51:25,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 851 transitions. [2022-11-23 14:51:25,015 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 851 transitions. Word has length 467 [2022-11-23 14:51:25,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:51:25,016 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 851 transitions. [2022-11-23 14:51:25,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 811 states, 811 states have (on average 1.0172626387176325) internal successors, (825), 811 states have internal predecessors, (825), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 14:51:25,018 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 851 transitions. [2022-11-23 14:51:25,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2022-11-23 14:51:25,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:51:25,029 INFO L195 NwaCegarLoop]: trace histogram [808, 30, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:51:25,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-23 14:51:25,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2f1af5-f281-4944-b08e-f8e9f339e3aa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 14:51:25,247 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:51:25,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:51:25,248 INFO L85 PathProgramCache]: Analyzing trace with hash -993005282, now seen corresponding path program 13 times [2022-11-23 14:51:25,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:51:25,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14576544] [2022-11-23 14:51:25,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:51:25,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:51:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat