./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/mapsum2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/mapsum2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS --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 981715b042dc751421769388e93842bdf7028c46e115693f476b30e4e763298a --- 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-8393723 [2022-11-19 07:25:14,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:25:14,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:25:14,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:25:14,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:25:14,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:25:14,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:25:14,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:25:14,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:25:14,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:25:14,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:25:14,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:25:14,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:25:14,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:25:14,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:25:14,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:25:14,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:25:14,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:25:14,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:25:14,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:25:14,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:25:14,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:25:14,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:25:14,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:25:14,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:25:14,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:25:14,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:25:14,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:25:14,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:25:14,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:25:14,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:25:14,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:25:14,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:25:14,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:25:14,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:25:14,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:25:14,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:25:14,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:25:14,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:25:14,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:25:14,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:25:14,332 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:25:14,371 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:25:14,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:25:14,371 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:25:14,371 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:25:14,372 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:25:14,372 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:25:14,372 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:25:14,373 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:25:14,373 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:25:14,373 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:25:14,373 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:25:14,374 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:25:14,374 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:25:14,374 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:25:14,374 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:25:14,374 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:25:14,375 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:25:14,375 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:25:14,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:25:14,376 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:25:14,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:25:14,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:25:14,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:25:14,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:25:14,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:25:14,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:25:14,377 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:25:14,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:25:14,378 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:25:14,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:25:14,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:25:14,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:25:14,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:25:14,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:25:14,379 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:25:14,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:25:14,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:25:14,380 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:25:14,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:25:14,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:25:14,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:25:14,381 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_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 981715b042dc751421769388e93842bdf7028c46e115693f476b30e4e763298a [2022-11-19 07:25:14,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:25:14,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:25:14,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:25:14,691 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:25:14,692 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:25:14,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/array-crafted/mapsum2.i [2022-11-19 07:25:14,775 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/data/9af0368fb/35dfbac28cfc496e99ded925e2803f39/FLAG080b936e3 [2022-11-19 07:25:15,231 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:25:15,232 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/sv-benchmarks/c/array-crafted/mapsum2.i [2022-11-19 07:25:15,244 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/data/9af0368fb/35dfbac28cfc496e99ded925e2803f39/FLAG080b936e3 [2022-11-19 07:25:15,627 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/data/9af0368fb/35dfbac28cfc496e99ded925e2803f39 [2022-11-19 07:25:15,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:25:15,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:25:15,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:25:15,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:25:15,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:25:15,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:25:15" (1/1) ... [2022-11-19 07:25:15,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dbcc7c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:15, skipping insertion in model container [2022-11-19 07:25:15,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:25:15" (1/1) ... [2022-11-19 07:25:15,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:25:15,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:25:15,949 WARN L234 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_385d2e3f-78f1-4924-a829-38474f6396c8/sv-benchmarks/c/array-crafted/mapsum2.i[1306,1319] [2022-11-19 07:25:15,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:25:15,963 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:25:15,999 WARN L234 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_385d2e3f-78f1-4924-a829-38474f6396c8/sv-benchmarks/c/array-crafted/mapsum2.i[1306,1319] [2022-11-19 07:25:16,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:25:16,018 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:25:16,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:16 WrapperNode [2022-11-19 07:25:16,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:25:16,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:25:16,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:25:16,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:25:16,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:16" (1/1) ... [2022-11-19 07:25:16,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:16" (1/1) ... [2022-11-19 07:25:16,068 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2022-11-19 07:25:16,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:25:16,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:25:16,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:25:16,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:25:16,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:16" (1/1) ... [2022-11-19 07:25:16,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:16" (1/1) ... [2022-11-19 07:25:16,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:16" (1/1) ... [2022-11-19 07:25:16,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:16" (1/1) ... [2022-11-19 07:25:16,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:16" (1/1) ... [2022-11-19 07:25:16,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:16" (1/1) ... [2022-11-19 07:25:16,102 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:16" (1/1) ... [2022-11-19 07:25:16,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:16" (1/1) ... [2022-11-19 07:25:16,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:25:16,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:25:16,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:25:16,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:25:16,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:16" (1/1) ... [2022-11-19 07:25:16,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:25:16,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:25:16,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:25:16,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:25:16,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:25:16,212 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2022-11-19 07:25:16,212 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2022-11-19 07:25:16,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:25:16,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:25:16,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:25:16,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:25:16,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:25:16,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:25:16,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:25:16,298 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:25:16,299 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:25:16,462 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:25:16,497 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:25:16,497 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 07:25:16,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:25:16 BoogieIcfgContainer [2022-11-19 07:25:16,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:25:16,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:25:16,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:25:16,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:25:16,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:25:15" (1/3) ... [2022-11-19 07:25:16,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac6848b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:25:16, skipping insertion in model container [2022-11-19 07:25:16,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:16" (2/3) ... [2022-11-19 07:25:16,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac6848b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:25:16, skipping insertion in model container [2022-11-19 07:25:16,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:25:16" (3/3) ... [2022-11-19 07:25:16,509 INFO L112 eAbstractionObserver]: Analyzing ICFG mapsum2.i [2022-11-19 07:25:16,527 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:25:16,527 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:25:16,581 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:25:16,588 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;@6c6fbe5c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:25:16,588 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:25:16,595 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) [2022-11-19 07:25:16,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 07:25:16,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:25:16,605 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:25:16,606 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:25:16,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:25:16,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1911737406, now seen corresponding path program 1 times [2022-11-19 07:25:16,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:25:16,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008433447] [2022-11-19 07:25:16,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:25:16,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:25:16,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:25:16,944 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:25:16,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:25:16,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008433447] [2022-11-19 07:25:16,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008433447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:25:16,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:25:16,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:25:16,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920250409] [2022-11-19 07:25:16,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:25:16,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:25:16,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:25:16,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:25:16,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:25:16,981 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) [2022-11-19 07:25:17,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:25:17,047 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2022-11-19 07:25:17,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:25:17,050 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 [2022-11-19 07:25:17,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:25:17,057 INFO L225 Difference]: With dead ends: 33 [2022-11-19 07:25:17,057 INFO L226 Difference]: Without dead ends: 16 [2022-11-19 07:25:17,060 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 [2022-11-19 07:25:17,064 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 [2022-11-19 07:25:17,065 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] [2022-11-19 07:25:17,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-19 07:25:17,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-19 07:25:17,098 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) [2022-11-19 07:25:17,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2022-11-19 07:25:17,101 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 20 [2022-11-19 07:25:17,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:25:17,101 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2022-11-19 07:25:17,102 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) [2022-11-19 07:25:17,102 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2022-11-19 07:25:17,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 07:25:17,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:25:17,104 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:25:17,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:25:17,105 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:25:17,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:25:17,106 INFO L85 PathProgramCache]: Analyzing trace with hash -242274518, now seen corresponding path program 1 times [2022-11-19 07:25:17,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:25:17,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508409772] [2022-11-19 07:25:17,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:25:17,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:25:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:25:17,319 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:25:17,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:25:17,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508409772] [2022-11-19 07:25:17,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508409772] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:25:17,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460022572] [2022-11-19 07:25:17,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:25:17,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:25:17,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:25:17,337 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:25:17,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:25:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:25:17,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:25:17,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:25:17,515 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:25:17,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:25:17,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460022572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:25:17,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:25:17,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-19 07:25:17,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29822074] [2022-11-19 07:25:17,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:25:17,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:25:17,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:25:17,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:25:17,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:25:17,522 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) [2022-11-19 07:25:17,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:25:17,544 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2022-11-19 07:25:17,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:25:17,545 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 [2022-11-19 07:25:17,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:25:17,545 INFO L225 Difference]: With dead ends: 29 [2022-11-19 07:25:17,546 INFO L226 Difference]: Without dead ends: 17 [2022-11-19 07:25:17,546 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 [2022-11-19 07:25:17,547 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 [2022-11-19 07:25:17,548 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] [2022-11-19 07:25:17,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-19 07:25:17,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-19 07:25:17,552 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) [2022-11-19 07:25:17,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-11-19 07:25:17,553 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 21 [2022-11-19 07:25:17,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:25:17,553 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-11-19 07:25:17,554 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) [2022-11-19 07:25:17,554 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-11-19 07:25:17,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-19 07:25:17,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:25:17,555 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:25:17,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:25:17,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:25:17,761 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:25:17,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:25:17,762 INFO L85 PathProgramCache]: Analyzing trace with hash 2071479167, now seen corresponding path program 1 times [2022-11-19 07:25:17,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:25:17,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889567143] [2022-11-19 07:25:17,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:25:17,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:25:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:25:17,920 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 07:25:17,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:25:17,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889567143] [2022-11-19 07:25:17,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889567143] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:25:17,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112515405] [2022-11-19 07:25:17,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:25:17,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:25:17,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:25:17,923 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:25:17,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:25:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:25:18,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:25:18,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:25:18,064 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:25:18,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:25:18,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112515405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:25:18,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:25:18,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-19 07:25:18,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151732212] [2022-11-19 07:25:18,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:25:18,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:25:18,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:25:18,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:25:18,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:25:18,071 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) [2022-11-19 07:25:18,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:25:18,099 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-11-19 07:25:18,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:25:18,100 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 [2022-11-19 07:25:18,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:25:18,101 INFO L225 Difference]: With dead ends: 27 [2022-11-19 07:25:18,101 INFO L226 Difference]: Without dead ends: 18 [2022-11-19 07:25:18,102 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 [2022-11-19 07:25:18,104 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 [2022-11-19 07:25:18,106 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] [2022-11-19 07:25:18,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-19 07:25:18,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-19 07:25:18,121 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) [2022-11-19 07:25:18,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-11-19 07:25:18,122 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 24 [2022-11-19 07:25:18,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:25:18,123 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-11-19 07:25:18,124 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) [2022-11-19 07:25:18,124 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-11-19 07:25:18,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-19 07:25:18,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:25:18,125 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:25:18,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:25:18,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:25:18,330 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:25:18,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:25:18,331 INFO L85 PathProgramCache]: Analyzing trace with hash -535158977, now seen corresponding path program 1 times [2022-11-19 07:25:18,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:25:18,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273750872] [2022-11-19 07:25:18,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:25:18,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:25:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:25:18,419 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:25:18,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:25:18,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273750872] [2022-11-19 07:25:18,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273750872] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:25:18,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783250997] [2022-11-19 07:25:18,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:25:18,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:25:18,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:25:18,421 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:25:18,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:25:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:25:18,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:25:18,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:25:18,583 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:25:18,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:25:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:25:18,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783250997] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:25:18,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [378305545] [2022-11-19 07:25:18,654 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:25:18,654 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:25:18,657 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:25:18,663 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:25:18,663 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:25:18,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:18,752 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:25:18,753 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 [2022-11-19 07:25:18,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:18,798 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:25:18,799 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 [2022-11-19 07:25:18,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:18,851 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 [2022-11-19 07:25:18,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:18,970 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:25:19,021 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-19 07:25:19,023 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 [2022-11-19 07:25:19,194 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 [2022-11-19 07:25:19,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:19,320 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 [2022-11-19 07:25:19,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:19,485 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 [2022-11-19 07:25:19,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:19,571 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-11-19 07:25:19,572 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 [2022-11-19 07:25:19,710 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 [2022-11-19 07:25:19,741 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 [2022-11-19 07:25:19,919 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-19 07:25:19,959 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:25:24,992 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '524#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 1000 |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|))) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 3996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= 999 |ULTIMATE.start_main_~i~2#1|) (<= |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 [2022-11-19 07:25:24,992 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:25:24,992 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:25:24,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2022-11-19 07:25:24,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657910393] [2022-11-19 07:25:24,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:25:24,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:25:24,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:25:24,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:25:24,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=299, Unknown=1, NotChecked=0, Total=380 [2022-11-19 07:25:24,995 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) [2022-11-19 07:25:25,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:25:25,029 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-11-19 07:25:25,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:25:25,030 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 [2022-11-19 07:25:25,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:25:25,031 INFO L225 Difference]: With dead ends: 36 [2022-11-19 07:25:25,031 INFO L226 Difference]: Without dead ends: 21 [2022-11-19 07:25:25,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=80, Invalid=299, Unknown=1, NotChecked=0, Total=380 [2022-11-19 07:25:25,033 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 [2022-11-19 07:25:25,033 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] [2022-11-19 07:25:25,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-19 07:25:25,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-19 07:25:25,037 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) [2022-11-19 07:25:25,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-11-19 07:25:25,038 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2022-11-19 07:25:25,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:25:25,039 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-11-19 07:25:25,039 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) [2022-11-19 07:25:25,039 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-11-19 07:25:25,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-19 07:25:25,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:25:25,040 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:25:25,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:25:25,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:25:25,251 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:25:25,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:25:25,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1059918509, now seen corresponding path program 2 times [2022-11-19 07:25:25,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:25:25,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324609010] [2022-11-19 07:25:25,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:25:25,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:25:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:25:25,339 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 07:25:25,339 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:25:25,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324609010] [2022-11-19 07:25:25,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324609010] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:25:25,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298705161] [2022-11-19 07:25:25,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:25:25,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:25:25,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:25:25,341 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:25:25,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:25:25,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 07:25:25,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:25:25,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:25:25,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:25:25,455 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 07:25:25,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:25:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 07:25:25,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298705161] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:25:25,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [903384645] [2022-11-19 07:25:25,498 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:25:25,498 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:25:25,499 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:25:25,499 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:25:25,500 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:25:25,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:25,565 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:25:25,566 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 [2022-11-19 07:25:25,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:25,599 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:25:25,600 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 [2022-11-19 07:25:25,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:25,627 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 [2022-11-19 07:25:25,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:25,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:25,699 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-19 07:25:25,699 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 [2022-11-19 07:25:25,765 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 [2022-11-19 07:25:25,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:25,839 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 [2022-11-19 07:25:25,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:25,965 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:25:25,967 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 [2022-11-19 07:25:26,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:26,015 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-19 07:25:26,016 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 [2022-11-19 07:25:26,051 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 [2022-11-19 07:25:26,064 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 [2022-11-19 07:25:26,194 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-19 07:25:26,228 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:25:29,173 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '797#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 1000 |ULTIMATE.start_main_~i~1#1|) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_11 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_11 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_11 4294967296) (+ (- 4294967296) (mod v_mapsum_~ret~0_BEFORE_RETURN_11 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|))) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 3996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 999 |ULTIMATE.start_main_~i~2#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 [2022-11-19 07:25:29,173 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:25:29,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:25:29,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-19 07:25:29,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028925664] [2022-11-19 07:25:29,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:25:29,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:25:29,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:25:29,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:25:29,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:25:29,176 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) [2022-11-19 07:25:29,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:25:29,214 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2022-11-19 07:25:29,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:25:29,216 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 [2022-11-19 07:25:29,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:25:29,216 INFO L225 Difference]: With dead ends: 38 [2022-11-19 07:25:29,216 INFO L226 Difference]: Without dead ends: 24 [2022-11-19 07:25:29,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:25:29,218 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 [2022-11-19 07:25:29,218 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] [2022-11-19 07:25:29,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-19 07:25:29,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-19 07:25:29,222 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) [2022-11-19 07:25:29,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-19 07:25:29,223 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 28 [2022-11-19 07:25:29,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:25:29,224 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-19 07:25:29,224 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) [2022-11-19 07:25:29,224 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-19 07:25:29,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-19 07:25:29,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:25:29,225 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:25:29,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:25:29,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:25:29,434 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:25:29,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:25:29,435 INFO L85 PathProgramCache]: Analyzing trace with hash 301103478, now seen corresponding path program 3 times [2022-11-19 07:25:29,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:25:29,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144962317] [2022-11-19 07:25:29,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:25:29,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:25:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:25:29,555 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-19 07:25:29,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:25:29,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144962317] [2022-11-19 07:25:29,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144962317] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:25:29,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016973873] [2022-11-19 07:25:29,556 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:25:29,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:25:29,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:25:29,557 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:25:29,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:25:29,651 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:25:29,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:25:29,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:25:29,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:25:29,702 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-19 07:25:29,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:25:29,785 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-19 07:25:29,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016973873] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:25:29,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2015290183] [2022-11-19 07:25:29,789 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:25:29,789 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:25:29,789 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:25:29,790 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:25:29,790 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:25:29,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:29,819 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:25:29,820 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 [2022-11-19 07:25:29,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:29,851 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:25:29,852 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 [2022-11-19 07:25:29,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:29,883 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 [2022-11-19 07:25:29,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:29,932 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:25:29,957 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-19 07:25:29,958 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 [2022-11-19 07:25:30,035 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 [2022-11-19 07:25:30,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:30,088 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 [2022-11-19 07:25:30,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:30,180 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:25:30,181 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 [2022-11-19 07:25:30,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:30,220 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-19 07:25:30,221 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 [2022-11-19 07:25:30,243 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 [2022-11-19 07:25:30,255 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 [2022-11-19 07:25:30,372 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-19 07:25:30,405 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:25:35,413 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1141#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 1000 |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|))) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 3996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (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))))) (<= 999 |ULTIMATE.start_main_~i~2#1|) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:25:35,414 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:25:35,414 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:25:35,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2022-11-19 07:25:35,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822196057] [2022-11-19 07:25:35,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:25:35,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 07:25:35,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:25:35,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 07:25:35,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2022-11-19 07:25:35,416 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) [2022-11-19 07:25:35,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:25:35,475 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2022-11-19 07:25:35,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-19 07:25:35,478 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 [2022-11-19 07:25:35,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:25:35,478 INFO L225 Difference]: With dead ends: 49 [2022-11-19 07:25:35,479 INFO L226 Difference]: Without dead ends: 31 [2022-11-19 07:25:35,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2022-11-19 07:25:35,480 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, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:25:35,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:25:35,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-19 07:25:35,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-19 07:25:35,484 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) [2022-11-19 07:25:35,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-11-19 07:25:35,485 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2022-11-19 07:25:35,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:25:35,485 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-11-19 07:25:35,486 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) [2022-11-19 07:25:35,486 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-11-19 07:25:35,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 07:25:35,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:25:35,487 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:25:35,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:25:35,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 07:25:35,688 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:25:35,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:25:35,688 INFO L85 PathProgramCache]: Analyzing trace with hash 884522878, now seen corresponding path program 4 times [2022-11-19 07:25:35,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:25:35,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569122767] [2022-11-19 07:25:35,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:25:35,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:25:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:25:35,986 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-19 07:25:35,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:25:35,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569122767] [2022-11-19 07:25:35,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569122767] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:25:35,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75291945] [2022-11-19 07:25:35,987 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 07:25:35,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:25:35,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:25:35,988 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:25:36,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 07:25:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:25:36,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 07:25:36,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:25:36,141 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-19 07:25:36,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:25:36,364 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-19 07:25:36,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75291945] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:25:36,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [934610487] [2022-11-19 07:25:36,366 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:25:36,366 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:25:36,366 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:25:36,367 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:25:36,367 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:25:36,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:36,407 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:25:36,411 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 [2022-11-19 07:25:36,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:36,422 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 [2022-11-19 07:25:36,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:36,440 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 [2022-11-19 07:25:36,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:36,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:36,492 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-19 07:25:36,493 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 [2022-11-19 07:25:36,553 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 [2022-11-19 07:25:36,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:36,610 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 [2022-11-19 07:25:36,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:36,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:25:36,695 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 [2022-11-19 07:25:36,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:36,734 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-19 07:25:36,735 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 [2022-11-19 07:25:36,760 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 [2022-11-19 07:25:36,773 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 [2022-11-19 07:25:36,901 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-19 07:25:36,940 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:25:39,932 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1574#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 1000 |ULTIMATE.start_main_~i~1#1|) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_24 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_24 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_24 4294967296) (+ (- 4294967296) (mod v_mapsum_~ret~0_BEFORE_RETURN_24 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|))) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 3996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 999 |ULTIMATE.start_main_~i~2#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 [2022-11-19 07:25:39,932 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:25:39,932 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:25:39,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2022-11-19 07:25:39,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910734582] [2022-11-19 07:25:39,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:25:39,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-19 07:25:39,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:25:39,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-19 07:25:39,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2022-11-19 07:25:39,934 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) [2022-11-19 07:25:40,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:25:40,011 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2022-11-19 07:25:40,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 07:25:40,012 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 [2022-11-19 07:25:40,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:25:40,013 INFO L225 Difference]: With dead ends: 62 [2022-11-19 07:25:40,013 INFO L226 Difference]: Without dead ends: 43 [2022-11-19 07:25:40,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2022-11-19 07:25:40,015 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-11-19 07:25:40,016 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] [2022-11-19 07:25:40,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-19 07:25:40,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-19 07:25:40,021 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) [2022-11-19 07:25:40,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-11-19 07:25:40,022 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 44 [2022-11-19 07:25:40,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:25:40,023 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-11-19 07:25:40,023 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) [2022-11-19 07:25:40,023 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-11-19 07:25:40,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-19 07:25:40,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:25:40,025 INFO L195 NwaCegarLoop]: trace histogram [22, 12, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:25:40,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:25:40,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 07:25:40,229 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:25:40,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:25:40,230 INFO L85 PathProgramCache]: Analyzing trace with hash -49590146, now seen corresponding path program 5 times [2022-11-19 07:25:40,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:25:40,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773960740] [2022-11-19 07:25:40,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:25:40,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:25:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:25:40,963 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-19 07:25:40,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:25:40,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773960740] [2022-11-19 07:25:40,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773960740] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:25:40,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168639640] [2022-11-19 07:25:40,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:25:40,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:25:40,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:25:40,966 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:25:40,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:25:41,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 07:25:41,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:25:41,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:25:41,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:25:41,155 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-11-19 07:25:41,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:25:41,307 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-11-19 07:25:41,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168639640] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:25:41,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [949833076] [2022-11-19 07:25:41,310 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:25:41,310 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:25:41,310 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:25:41,311 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:25:41,311 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:25:41,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:41,336 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:25:41,336 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 [2022-11-19 07:25:41,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:41,361 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:25:41,361 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 [2022-11-19 07:25:41,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:41,379 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 [2022-11-19 07:25:41,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:41,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:41,430 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-19 07:25:41,431 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 [2022-11-19 07:25:41,468 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 [2022-11-19 07:25:41,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:41,537 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 [2022-11-19 07:25:41,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:41,624 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 [2022-11-19 07:25:41,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:41,674 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-11-19 07:25:41,675 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 [2022-11-19 07:25:41,753 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 [2022-11-19 07:25:41,769 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 [2022-11-19 07:25:41,887 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-19 07:25:41,918 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:25:47,197 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2139#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 1000 |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|))) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 3996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= 999 |ULTIMATE.start_main_~i~2#1|) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_29 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_29 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_29 4294967296) (+ (- 4294967296) (mod v_mapsum_~ret~0_BEFORE_RETURN_29 4294967296))))) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 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 [2022-11-19 07:25:47,197 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:25:47,197 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:25:47,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 35 [2022-11-19 07:25:47,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067551999] [2022-11-19 07:25:47,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:25:47,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-19 07:25:47,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:25:47,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-19 07:25:47,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=1831, Unknown=0, NotChecked=0, Total=2256 [2022-11-19 07:25:47,200 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) [2022-11-19 07:25:47,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:25:47,309 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2022-11-19 07:25:47,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-19 07:25:47,309 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 [2022-11-19 07:25:47,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:25:47,310 INFO L225 Difference]: With dead ends: 69 [2022-11-19 07:25:47,310 INFO L226 Difference]: Without dead ends: 50 [2022-11-19 07:25:47,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=425, Invalid=1831, Unknown=0, NotChecked=0, Total=2256 [2022-11-19 07:25:47,312 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 [2022-11-19 07:25:47,312 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] [2022-11-19 07:25:47,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-19 07:25:47,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-11-19 07:25:47,318 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) [2022-11-19 07:25:47,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2022-11-19 07:25:47,320 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 56 [2022-11-19 07:25:47,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:25:47,320 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2022-11-19 07:25:47,320 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) [2022-11-19 07:25:47,321 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2022-11-19 07:25:47,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-19 07:25:47,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:25:47,322 INFO L195 NwaCegarLoop]: trace histogram [30, 23, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:25:47,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:25:47,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:25:47,533 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:25:47,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:25:47,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1858566262, now seen corresponding path program 6 times [2022-11-19 07:25:47,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:25:47,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352925879] [2022-11-19 07:25:47,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:25:47,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:25:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:25:48,379 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-19 07:25:48,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:25:48,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352925879] [2022-11-19 07:25:48,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352925879] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:25:48,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545101283] [2022-11-19 07:25:48,380 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:25:48,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:25:48,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:25:48,383 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:25:48,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 07:25:48,549 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:25:48,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:25:48,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-19 07:25:48,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:25:48,607 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-19 07:25:48,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:25:49,457 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-19 07:25:49,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545101283] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:25:49,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1127303373] [2022-11-19 07:25:49,460 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:25:49,460 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:25:49,460 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:25:49,460 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:25:49,460 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:25:49,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:49,492 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:25:49,492 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 [2022-11-19 07:25:49,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:49,501 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 [2022-11-19 07:25:49,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:49,517 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 [2022-11-19 07:25:49,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:49,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:49,593 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-19 07:25:49,594 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 [2022-11-19 07:25:49,626 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 [2022-11-19 07:25:49,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:49,670 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 [2022-11-19 07:25:49,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:49,745 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 [2022-11-19 07:25:49,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:49,792 INFO L321 Elim1Store]: treesize reduction 40, result has 42.0 percent of original size [2022-11-19 07:25:49,793 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 [2022-11-19 07:25:49,830 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 [2022-11-19 07:25:49,839 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 [2022-11-19 07:25:49,927 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-19 07:25:49,974 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:25:51,112 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2862#(and (exists ((v_mapsum_~ret~0_BEFORE_RETURN_35 Int)) (= (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_35 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_35 4294967296) (+ (- 4294967296) (mod v_mapsum_~ret~0_BEFORE_RETURN_35 4294967296))) |ULTIMATE.start_main_~ret5~0#1|)) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 1000 |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|))) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 3996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 999 |ULTIMATE.start_main_~i~2#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 [2022-11-19 07:25:51,112 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:25:51,112 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:25:51,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 26] total 51 [2022-11-19 07:25:51,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266642915] [2022-11-19 07:25:51,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:25:51,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-19 07:25:51,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:25:51,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-19 07:25:51,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1335, Invalid=2697, Unknown=0, NotChecked=0, Total=4032 [2022-11-19 07:25:51,116 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) [2022-11-19 07:25:51,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:25:51,238 INFO L93 Difference]: Finished difference Result 100 states and 132 transitions. [2022-11-19 07:25:51,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-19 07:25:51,239 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 [2022-11-19 07:25:51,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:25:51,242 INFO L225 Difference]: With dead ends: 100 [2022-11-19 07:25:51,242 INFO L226 Difference]: Without dead ends: 75 [2022-11-19 07:25:51,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1335, Invalid=2697, Unknown=0, NotChecked=0, Total=4032 [2022-11-19 07:25:51,246 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 [2022-11-19 07:25:51,247 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] [2022-11-19 07:25:51,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-19 07:25:51,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-11-19 07:25:51,264 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) [2022-11-19 07:25:51,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2022-11-19 07:25:51,267 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 75 [2022-11-19 07:25:51,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:25:51,269 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2022-11-19 07:25:51,269 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) [2022-11-19 07:25:51,269 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2022-11-19 07:25:51,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-19 07:25:51,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:25:51,272 INFO L195 NwaCegarLoop]: trace histogram [48, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:25:51,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-19 07:25:51,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:25:51,472 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:25:51,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:25:51,473 INFO L85 PathProgramCache]: Analyzing trace with hash -248124130, now seen corresponding path program 7 times [2022-11-19 07:25:51,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:25:51,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536448280] [2022-11-19 07:25:51,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:25:51,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:25:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:25:54,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-19 07:25:54,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:25:54,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536448280] [2022-11-19 07:25:54,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536448280] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:25:54,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696270472] [2022-11-19 07:25:54,069 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 07:25:54,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:25:54,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:25:54,074 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:25:54,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-19 07:25:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:25:54,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-19 07:25:54,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:25:54,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-19 07:25:54,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:25:57,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-19 07:25:57,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696270472] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:25:57,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1406276948] [2022-11-19 07:25:57,527 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:25:57,528 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:25:57,528 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:25:57,528 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:25:57,528 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:25:57,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:57,565 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:25:57,565 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 [2022-11-19 07:25:57,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:57,586 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 [2022-11-19 07:25:57,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:57,603 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 [2022-11-19 07:25:57,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:57,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:25:57,666 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-19 07:25:57,667 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 [2022-11-19 07:25:57,726 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 [2022-11-19 07:25:57,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:57,776 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 [2022-11-19 07:25:57,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:57,855 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:25:57,856 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 [2022-11-19 07:25:57,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:57,893 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-19 07:25:57,893 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 [2022-11-19 07:25:57,917 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 [2022-11-19 07:25:57,929 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 [2022-11-19 07:25:58,043 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-19 07:25:58,066 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:26:01,533 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3897#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_41 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_41 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_41 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_41 4294967296) (- 4294967296))))) (<= 1000 |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|))) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 3996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 999 |ULTIMATE.start_main_~i~2#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 [2022-11-19 07:26:01,533 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:26:01,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:26:01,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 51] total 101 [2022-11-19 07:26:01,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013164251] [2022-11-19 07:26:01,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:26:01,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-11-19 07:26:01,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:26:01,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-11-19 07:26:01,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5110, Invalid=7772, Unknown=0, NotChecked=0, Total=12882 [2022-11-19 07:26:01,541 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) [2022-11-19 07:26:01,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:26:01,761 INFO L93 Difference]: Finished difference Result 150 states and 207 transitions. [2022-11-19 07:26:01,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-11-19 07:26:01,762 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 [2022-11-19 07:26:01,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:26:01,764 INFO L225 Difference]: With dead ends: 150 [2022-11-19 07:26:01,764 INFO L226 Difference]: Without dead ends: 125 [2022-11-19 07:26:01,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2138 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=5110, Invalid=7772, Unknown=0, NotChecked=0, Total=12882 [2022-11-19 07:26:01,770 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 [2022-11-19 07:26:01,771 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] [2022-11-19 07:26:01,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-19 07:26:01,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-11-19 07:26:01,794 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) [2022-11-19 07:26:01,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2022-11-19 07:26:01,798 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 100 [2022-11-19 07:26:01,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:26:01,799 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2022-11-19 07:26:01,799 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) [2022-11-19 07:26:01,799 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2022-11-19 07:26:01,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-19 07:26:01,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:26:01,806 INFO L195 NwaCegarLoop]: trace histogram [98, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:26:01,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-19 07:26:02,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-19 07:26:02,013 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:26:02,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:26:02,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1563397790, now seen corresponding path program 8 times [2022-11-19 07:26:02,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:26:02,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121668601] [2022-11-19 07:26:02,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:26:02,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:26:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:26:09,721 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-19 07:26:09,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:26:09,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121668601] [2022-11-19 07:26:09,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121668601] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:26:09,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007449946] [2022-11-19 07:26:09,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:26:09,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:26:09,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:26:09,723 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:26:09,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 07:26:09,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 07:26:09,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:26:09,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:26:09,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:26:10,058 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 246 proven. 3 refuted. 0 times theorem prover too weak. 5139 trivial. 0 not checked. [2022-11-19 07:26:10,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:26:10,228 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5385 trivial. 0 not checked. [2022-11-19 07:26:10,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007449946] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:26:10,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1621635694] [2022-11-19 07:26:10,230 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:26:10,231 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:26:10,231 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:26:10,231 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:26:10,231 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:26:10,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:26:10,263 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:26:10,264 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 [2022-11-19 07:26:10,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:26:10,291 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:26:10,292 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 [2022-11-19 07:26:10,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:26:10,310 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 [2022-11-19 07:26:10,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:26:10,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:26:10,362 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-19 07:26:10,363 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 [2022-11-19 07:26:10,405 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 [2022-11-19 07:26:10,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:26:10,476 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 [2022-11-19 07:26:10,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:26:10,562 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:26:10,563 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 [2022-11-19 07:26:10,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:26:10,600 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-19 07:26:10,600 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 [2022-11-19 07:26:10,623 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 [2022-11-19 07:26:10,633 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 13 treesize of output 9 [2022-11-19 07:26:10,730 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-19 07:26:10,767 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:26:16,946 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5438#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 1000 |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|))) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 3996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= 999 |ULTIMATE.start_main_~i~2#1|) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 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|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:26:16,947 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:26:16,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:26:16,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 5, 5] total 107 [2022-11-19 07:26:16,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113010916] [2022-11-19 07:26:16,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:26:16,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-11-19 07:26:16,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:26:16,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-11-19 07:26:16,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5136, Invalid=9143, Unknown=1, NotChecked=0, Total=14280 [2022-11-19 07:26:16,952 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) [2022-11-19 07:26:17,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:26:17,142 INFO L93 Difference]: Finished difference Result 155 states and 167 transitions. [2022-11-19 07:26:17,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-11-19 07:26:17,143 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 [2022-11-19 07:26:17,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:26:17,144 INFO L225 Difference]: With dead ends: 155 [2022-11-19 07:26:17,144 INFO L226 Difference]: Without dead ends: 130 [2022-11-19 07:26:17,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1988 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=5136, Invalid=9143, Unknown=1, NotChecked=0, Total=14280 [2022-11-19 07:26:17,149 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 [2022-11-19 07:26:17,149 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] [2022-11-19 07:26:17,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-19 07:26:17,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-11-19 07:26:17,169 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) [2022-11-19 07:26:17,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 134 transitions. [2022-11-19 07:26:17,171 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 134 transitions. Word has length 150 [2022-11-19 07:26:17,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:26:17,172 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 134 transitions. [2022-11-19 07:26:17,173 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) [2022-11-19 07:26:17,173 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 134 transitions. [2022-11-19 07:26:17,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-19 07:26:17,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:26:17,176 INFO L195 NwaCegarLoop]: trace histogram [99, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:26:17,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 07:26:17,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-19 07:26:17,382 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:26:17,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:26:17,382 INFO L85 PathProgramCache]: Analyzing trace with hash 109612682, now seen corresponding path program 9 times [2022-11-19 07:26:17,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:26:17,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463019637] [2022-11-19 07:26:17,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:26:17,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:26:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:26:24,567 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-19 07:26:24,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:26:24,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463019637] [2022-11-19 07:26:24,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463019637] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:26:24,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337723328] [2022-11-19 07:26:24,568 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:26:24,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:26:24,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:26:24,569 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:26:24,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-19 07:26:24,932 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:26:24,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:26:24,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 101 conjunts are in the unsatisfiable core [2022-11-19 07:26:24,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:26:25,141 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-19 07:26:25,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:26:38,097 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-19 07:26:38,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337723328] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:26:38,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1867129997] [2022-11-19 07:26:38,099 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:26:38,100 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:26:38,100 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:26:38,100 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:26:38,100 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:26:38,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:26:38,130 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:26:38,130 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 [2022-11-19 07:26:38,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:26:38,153 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:26:38,153 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 [2022-11-19 07:26:38,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:26:38,170 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 [2022-11-19 07:26:38,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:26:38,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:26:38,245 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-19 07:26:38,245 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 [2022-11-19 07:26:38,281 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 [2022-11-19 07:26:38,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:26:38,340 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 [2022-11-19 07:26:38,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:26:38,421 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:26:38,421 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 [2022-11-19 07:26:38,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:26:38,461 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-19 07:26:38,461 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 [2022-11-19 07:26:38,482 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 [2022-11-19 07:26:38,492 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 [2022-11-19 07:26:38,582 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-19 07:26:38,608 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:26:42,675 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7125#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 1000 |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|))) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 3996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 999 |ULTIMATE.start_main_~i~2#1|) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_54 Int)) (= (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_54 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_54 4294967296) (+ (- 4294967296) (mod v_mapsum_~ret~0_BEFORE_RETURN_54 4294967296))) |ULTIMATE.start_main_~ret5~0#1|)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:26:42,675 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:26:42,675 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:26:42,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101, 102] total 203 [2022-11-19 07:26:42,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474099974] [2022-11-19 07:26:42,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:26:42,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2022-11-19 07:26:42,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:26:42,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2022-11-19 07:26:42,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20563, Invalid=25877, Unknown=0, NotChecked=0, Total=46440 [2022-11-19 07:26:42,685 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) [2022-11-19 07:26:43,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:26:43,245 INFO L93 Difference]: Finished difference Result 260 states and 368 transitions. [2022-11-19 07:26:43,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2022-11-19 07:26:43,246 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 [2022-11-19 07:26:43,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:26:43,248 INFO L225 Difference]: With dead ends: 260 [2022-11-19 07:26:43,248 INFO L226 Difference]: Without dead ends: 231 [2022-11-19 07:26:43,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4331 ImplicationChecksByTransitivity, 21.2s TimeCoverageRelationStatistics Valid=20563, Invalid=25877, Unknown=0, NotChecked=0, Total=46440 [2022-11-19 07:26:43,254 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:26:43,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:26:43,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-19 07:26:43,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2022-11-19 07:26:43,264 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) [2022-11-19 07:26:43,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 235 transitions. [2022-11-19 07:26:43,265 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 235 transitions. Word has length 155 [2022-11-19 07:26:43,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:26:43,266 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 235 transitions. [2022-11-19 07:26:43,266 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) [2022-11-19 07:26:43,266 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 235 transitions. [2022-11-19 07:26:43,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-19 07:26:43,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:26:43,270 INFO L195 NwaCegarLoop]: trace histogram [200, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:26:43,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-19 07:26:43,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:26:43,477 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:26:43,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:26:43,477 INFO L85 PathProgramCache]: Analyzing trace with hash -137040610, now seen corresponding path program 10 times [2022-11-19 07:26:43,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:26:43,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466818981] [2022-11-19 07:26:43,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:26:43,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:26:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:27:10,098 INFO L134 CoverageAnalysis]: Checked inductivity of 20655 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-19 07:27:10,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:27:10,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466818981] [2022-11-19 07:27:10,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466818981] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:27:10,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149005867] [2022-11-19 07:27:10,099 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 07:27:10,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:27:10,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:27:10,101 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:27:10,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-19 07:27:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:27:10,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 2116 conjuncts, 202 conjunts are in the unsatisfiable core [2022-11-19 07:27:10,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:27:11,093 INFO L134 CoverageAnalysis]: Checked inductivity of 20655 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-19 07:27:11,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:28:02,865 INFO L134 CoverageAnalysis]: Checked inductivity of 20655 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-19 07:28:02,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149005867] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:28:02,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1840272006] [2022-11-19 07:28:02,879 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:28:02,880 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:28:02,880 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:28:02,881 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:28:02,881 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:28:02,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:02,922 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:28:02,923 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 [2022-11-19 07:28:02,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:02,963 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:28:02,964 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 [2022-11-19 07:28:02,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:02,981 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 [2022-11-19 07:28:03,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:03,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:03,046 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-19 07:28:03,046 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 [2022-11-19 07:28:03,101 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 [2022-11-19 07:28:03,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:03,150 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 [2022-11-19 07:28:03,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:03,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:03,235 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 [2022-11-19 07:28:03,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:03,273 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-19 07:28:03,273 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 [2022-11-19 07:28:03,302 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 [2022-11-19 07:28:03,313 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 [2022-11-19 07:28:03,407 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-19 07:28:03,435 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:28:06,966 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10032#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 1000 |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))))) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 3996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 999 |ULTIMATE.start_main_~i~2#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 [2022-11-19 07:28:06,967 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:28:06,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:28:06,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [203, 202, 203] total 405 [2022-11-19 07:28:06,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840067374] [2022-11-19 07:28:06,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:28:06,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 405 states [2022-11-19 07:28:06,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:06,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 405 interpolants. [2022-11-19 07:28:06,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81870, Invalid=92436, Unknown=0, NotChecked=0, Total=174306 [2022-11-19 07:28:06,999 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) [2022-11-19 07:28:09,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:09,614 INFO L93 Difference]: Finished difference Result 462 states and 671 transitions. [2022-11-19 07:28:09,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 404 states. [2022-11-19 07:28:09,615 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 [2022-11-19 07:28:09,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:09,618 INFO L225 Difference]: With dead ends: 462 [2022-11-19 07:28:09,618 INFO L226 Difference]: Without dead ends: 433 [2022-11-19 07:28:09,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 969 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 416 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8674 ImplicationChecksByTransitivity, 71.7s TimeCoverageRelationStatistics Valid=81870, Invalid=92436, Unknown=0, NotChecked=0, Total=174306 [2022-11-19 07:28:09,627 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 [2022-11-19 07:28:09,627 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] [2022-11-19 07:28:09,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-11-19 07:28:09,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2022-11-19 07:28:09,645 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) [2022-11-19 07:28:09,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 437 transitions. [2022-11-19 07:28:09,647 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 437 transitions. Word has length 256 [2022-11-19 07:28:09,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:09,648 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 437 transitions. [2022-11-19 07:28:09,648 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) [2022-11-19 07:28:09,649 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 437 transitions. [2022-11-19 07:28:09,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2022-11-19 07:28:09,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:09,658 INFO L195 NwaCegarLoop]: trace histogram [402, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:28:09,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-19 07:28:09,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:09,867 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:09,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:09,867 INFO L85 PathProgramCache]: Analyzing trace with hash 11194526, now seen corresponding path program 11 times [2022-11-19 07:28:09,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:09,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163057611] [2022-11-19 07:28:09,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:09,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:11,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:30:01,510 INFO L134 CoverageAnalysis]: Checked inductivity of 81558 backedges. 0 proven. 81003 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-19 07:30:01,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:30:01,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163057611] [2022-11-19 07:30:01,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163057611] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:30:01,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886673534] [2022-11-19 07:30:01,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:30:01,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:30:01,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:30:01,521 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:30:01,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-19 07:30:02,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 07:30:02,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:30:02,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:30:02,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:30:03,445 INFO L134 CoverageAnalysis]: Checked inductivity of 81558 backedges. 246 proven. 21 refuted. 0 times theorem prover too weak. 81291 trivial. 0 not checked. [2022-11-19 07:30:03,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:30:04,813 INFO L134 CoverageAnalysis]: Checked inductivity of 81558 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 81537 trivial. 0 not checked. [2022-11-19 07:30:04,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886673534] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:30:04,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1896518730] [2022-11-19 07:30:04,815 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:30:04,815 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:30:04,816 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:30:04,816 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:30:04,816 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:30:04,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:04,841 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:30:04,841 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 [2022-11-19 07:30:04,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:04,850 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 [2022-11-19 07:30:04,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:04,865 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 [2022-11-19 07:30:04,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:04,907 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:30:04,931 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-19 07:30:04,931 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 [2022-11-19 07:30:04,984 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 [2022-11-19 07:30:05,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:05,028 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 [2022-11-19 07:30:05,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:05,099 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:30:05,100 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 [2022-11-19 07:30:05,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:05,145 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-19 07:30:05,145 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 [2022-11-19 07:30:05,166 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 [2022-11-19 07:30:05,177 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 [2022-11-19 07:30:05,267 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-19 07:30:05,294 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:30:15,544 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14973#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 1000 |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|))) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 3996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= 999 |ULTIMATE.start_main_~i~2#1|) (<= |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 [2022-11-19 07:30:15,544 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:30:15,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:30:15,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [405, 9, 9] total 419 [2022-11-19 07:30:15,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310582942] [2022-11-19 07:30:15,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:30:15,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 419 states [2022-11-19 07:30:15,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:30:15,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 419 interpolants. [2022-11-19 07:30:15,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81988, Invalid=104203, Unknown=1, NotChecked=0, Total=186192 [2022-11-19 07:30:15,566 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) [2022-11-19 07:30:18,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:30:18,176 INFO L93 Difference]: Finished difference Result 471 states and 487 transitions. [2022-11-19 07:30:18,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 419 states. [2022-11-19 07:30:18,178 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 [2022-11-19 07:30:18,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:30:18,180 INFO L225 Difference]: With dead ends: 471 [2022-11-19 07:30:18,181 INFO L226 Difference]: Without dead ends: 442 [2022-11-19 07:30:18,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1777 GetRequests, 1347 SyntacticMatches, 0 SemanticMatches, 430 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11136 ImplicationChecksByTransitivity, 82.0s TimeCoverageRelationStatistics Valid=81988, Invalid=104203, Unknown=1, NotChecked=0, Total=186192 [2022-11-19 07:30:18,192 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 [2022-11-19 07:30:18,193 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] [2022-11-19 07:30:18,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-11-19 07:30:18,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2022-11-19 07:30:18,214 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) [2022-11-19 07:30:18,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 446 transitions. [2022-11-19 07:30:18,216 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 446 transitions. Word has length 458 [2022-11-19 07:30:18,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:30:18,217 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 446 transitions. [2022-11-19 07:30:18,218 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) [2022-11-19 07:30:18,218 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 446 transitions. [2022-11-19 07:30:18,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2022-11-19 07:30:18,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:30:18,228 INFO L195 NwaCegarLoop]: trace histogram [403, 30, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:30:18,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-19 07:30:18,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-19 07:30:18,434 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:30:18,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:30:18,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1121507978, now seen corresponding path program 12 times [2022-11-19 07:30:18,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:30:18,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708311800] [2022-11-19 07:30:18,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:30:18,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:30:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:32:08,594 INFO L134 CoverageAnalysis]: Checked inductivity of 82045 backedges. 0 proven. 81406 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2022-11-19 07:32:08,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:32:08,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708311800] [2022-11-19 07:32:08,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708311800] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:32:08,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157807352] [2022-11-19 07:32:08,594 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:32:08,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:32:08,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:32:08,597 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:32:08,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-19 07:32:09,655 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:32:09,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:32:09,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 3999 conjuncts, 405 conjunts are in the unsatisfiable core [2022-11-19 07:32:09,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:32:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 82045 backedges. 0 proven. 81406 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2022-11-19 07:32:10,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:35:47,779 INFO L134 CoverageAnalysis]: Checked inductivity of 82045 backedges. 0 proven. 81406 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2022-11-19 07:35:47,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157807352] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:35:47,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [219580036] [2022-11-19 07:35:47,781 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:35:47,781 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:35:47,782 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:35:47,782 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:35:47,782 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:35:47,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:47,810 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:35:47,811 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 [2022-11-19 07:35:47,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:47,821 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 [2022-11-19 07:35:47,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:47,836 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 [2022-11-19 07:35:47,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:47,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:35:47,891 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-19 07:35:47,891 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 [2022-11-19 07:35:47,951 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 [2022-11-19 07:35:47,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:47,995 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 [2022-11-19 07:35:48,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:48,060 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 [2022-11-19 07:35:48,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:48,107 INFO L321 Elim1Store]: treesize reduction 40, result has 42.0 percent of original size [2022-11-19 07:35:48,107 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 [2022-11-19 07:35:48,151 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 [2022-11-19 07:35:48,165 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 [2022-11-19 07:35:48,262 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-19 07:35:48,287 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:35:54,551 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20396#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 1000 |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|))) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 3996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 999 |ULTIMATE.start_main_~i~2#1|) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_72 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_72 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_72 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_72 4294967296) (- 4294967296))))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:35:54,551 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:35:54,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:35:54,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [406, 405, 406] total 811 [2022-11-19 07:35:54,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832876196] [2022-11-19 07:35:54,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:35:54,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 811 states [2022-11-19 07:35:54,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:35:54,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 811 interpolants. [2022-11-19 07:35:54,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328515, Invalid=349637, Unknown=0, NotChecked=0, Total=678152 [2022-11-19 07:35:54,657 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) [2022-11-19 07:36:11,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:36:11,970 INFO L93 Difference]: Finished difference Result 884 states and 1296 transitions. [2022-11-19 07:36:11,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 810 states. [2022-11-19 07:36:11,972 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 [2022-11-19 07:36:11,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:36:11,978 INFO L225 Difference]: With dead ends: 884 [2022-11-19 07:36:11,978 INFO L226 Difference]: Without dead ends: 847 [2022-11-19 07:36:12,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1805 GetRequests, 983 SyntacticMatches, 0 SemanticMatches, 822 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17403 ImplicationChecksByTransitivity, 292.8s TimeCoverageRelationStatistics Valid=328515, Invalid=349637, Unknown=0, NotChecked=0, Total=678152 [2022-11-19 07:36:12,017 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:36:12,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-19 07:36:12,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-11-19 07:36:12,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2022-11-19 07:36:12,051 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) [2022-11-19 07:36:12,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 851 transitions. [2022-11-19 07:36:12,054 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 851 transitions. Word has length 467 [2022-11-19 07:36:12,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:36:12,055 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 851 transitions. [2022-11-19 07:36:12,056 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) [2022-11-19 07:36:12,057 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 851 transitions. [2022-11-19 07:36:12,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2022-11-19 07:36:12,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:12,065 INFO L195 NwaCegarLoop]: trace histogram [808, 30, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:36:12,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-19 07:36:12,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385d2e3f-78f1-4924-a829-38474f6396c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-19 07:36:12,267 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:36:12,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:12,267 INFO L85 PathProgramCache]: Analyzing trace with hash -993005282, now seen corresponding path program 13 times [2022-11-19 07:36:12,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:36:12,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295687488] [2022-11-19 07:36:12,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:12,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:36:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat