./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/bor1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/bor1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7 --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 dc029b09d1398b404e1aee83359480f2bc7a4040f694547fb82d365d81b9786a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:11:23,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:11:23,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:11:23,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:11:23,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:11:23,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:11:23,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:11:23,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:11:23,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:11:23,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:11:23,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:11:23,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:11:23,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:11:23,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:11:23,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:11:23,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:11:23,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:11:23,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:11:23,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:11:23,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:11:23,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:11:23,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:11:23,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:11:23,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:11:23,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:11:23,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:11:23,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:11:23,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:11:23,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:11:23,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:11:23,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:11:23,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:11:23,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:11:23,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:11:23,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:11:23,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:11:23,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:11:23,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:11:23,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:11:23,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:11:23,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:11:23,601 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:11:23,626 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:11:23,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:11:23,626 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:11:23,627 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:11:23,627 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:11:23,627 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:11:23,628 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:11:23,628 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:11:23,628 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:11:23,628 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:11:23,628 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:11:23,629 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:11:23,629 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:11:23,629 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:11:23,629 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:11:23,629 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:11:23,630 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:11:23,630 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:11:23,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:11:23,631 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:11:23,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:11:23,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:11:23,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:11:23,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:11:23,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:11:23,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:11:23,632 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:11:23,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:11:23,633 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:11:23,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:11:23,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:11:23,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:11:23,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:11:23,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:11:23,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:11:23,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:11:23,634 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:11:23,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:11:23,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:11:23,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:11:23,635 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:11:23,635 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc029b09d1398b404e1aee83359480f2bc7a4040f694547fb82d365d81b9786a [2021-11-25 19:11:23,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:11:23,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:11:23,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:11:23,989 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:11:23,990 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:11:23,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/array-crafted/bor1.i [2021-11-25 19:11:24,070 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/data/07d7e23ae/19e7fa475d2144e48bb8840cc714f4f2/FLAGd09ea22fe [2021-11-25 19:11:24,711 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:11:24,711 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/sv-benchmarks/c/array-crafted/bor1.i [2021-11-25 19:11:24,717 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/data/07d7e23ae/19e7fa475d2144e48bb8840cc714f4f2/FLAGd09ea22fe [2021-11-25 19:11:24,730 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/data/07d7e23ae/19e7fa475d2144e48bb8840cc714f4f2 [2021-11-25 19:11:24,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:11:24,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:11:24,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:11:24,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:11:24,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:11:24,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:11:24" (1/1) ... [2021-11-25 19:11:24,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@86e3b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:24, skipping insertion in model container [2021-11-25 19:11:24,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:11:24" (1/1) ... [2021-11-25 19:11:24,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:11:24,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:11:24,961 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/sv-benchmarks/c/array-crafted/bor1.i[1285,1298] [2021-11-25 19:11:24,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:11:24,973 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:11:24,997 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/sv-benchmarks/c/array-crafted/bor1.i[1285,1298] [2021-11-25 19:11:24,998 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:11:25,015 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:11:25,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:25 WrapperNode [2021-11-25 19:11:25,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:11:25,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:11:25,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:11:25,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:11:25,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:25" (1/1) ... [2021-11-25 19:11:25,034 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:25" (1/1) ... [2021-11-25 19:11:25,056 INFO L137 Inliner]: procedures = 16, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 74 [2021-11-25 19:11:25,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:11:25,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:11:25,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:11:25,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:11:25,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:25" (1/1) ... [2021-11-25 19:11:25,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:25" (1/1) ... [2021-11-25 19:11:25,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:25" (1/1) ... [2021-11-25 19:11:25,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:25" (1/1) ... [2021-11-25 19:11:25,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:25" (1/1) ... [2021-11-25 19:11:25,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:25" (1/1) ... [2021-11-25 19:11:25,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:25" (1/1) ... [2021-11-25 19:11:25,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:11:25,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:11:25,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:11:25,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:11:25,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:25" (1/1) ... [2021-11-25 19:11:25,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:11:25,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:11:25,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:11:25,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:11:25,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:11:25,216 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2021-11-25 19:11:25,216 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2021-11-25 19:11:25,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:11:25,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:11:25,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:11:25,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:11:25,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:11:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:11:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:11:25,310 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:11:25,312 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:11:25,518 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:11:25,579 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:11:25,580 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 19:11:25,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:11:25 BoogieIcfgContainer [2021-11-25 19:11:25,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:11:25,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:11:25,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:11:25,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:11:25,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:11:24" (1/3) ... [2021-11-25 19:11:25,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f27fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:11:25, skipping insertion in model container [2021-11-25 19:11:25,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:25" (2/3) ... [2021-11-25 19:11:25,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f27fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:11:25, skipping insertion in model container [2021-11-25 19:11:25,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:11:25" (3/3) ... [2021-11-25 19:11:25,593 INFO L111 eAbstractionObserver]: Analyzing ICFG bor1.i [2021-11-25 19:11:25,596 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:11:25,597 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:11:25,645 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:11:25,652 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:11:25,652 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:11:25,668 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) [2021-11-25 19:11:25,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-25 19:11:25,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:25,674 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:11:25,675 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:25,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:25,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1439153059, now seen corresponding path program 1 times [2021-11-25 19:11:25,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:25,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111117451] [2021-11-25 19:11:25,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:25,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:25,968 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:11:25,969 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:25,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111117451] [2021-11-25 19:11:25,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111117451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:25,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:11:25,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:11:25,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192857879] [2021-11-25 19:11:25,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:25,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:11:25,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:26,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:11:26,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:11:26,009 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) [2021-11-25 19:11:26,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:26,068 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2021-11-25 19:11:26,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:11:26,071 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 [2021-11-25 19:11:26,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:26,078 INFO L225 Difference]: With dead ends: 33 [2021-11-25 19:11:26,078 INFO L226 Difference]: Without dead ends: 16 [2021-11-25 19:11:26,080 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:11:26,085 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 18 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 [2021-11-25 19:11:26,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:11:26,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-25 19:11:26,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-25 19:11:26,142 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) [2021-11-25 19:11:26,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-11-25 19:11:26,143 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 20 [2021-11-25 19:11:26,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:26,144 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-11-25 19:11:26,144 INFO L471 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) [2021-11-25 19:11:26,144 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-11-25 19:11:26,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 19:11:26,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:26,146 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:11:26,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:11:26,147 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:26,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:26,148 INFO L85 PathProgramCache]: Analyzing trace with hash -538547963, now seen corresponding path program 1 times [2021-11-25 19:11:26,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:26,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225786464] [2021-11-25 19:11:26,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:26,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:26,227 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:11:26,227 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:26,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225786464] [2021-11-25 19:11:26,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225786464] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:11:26,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883131289] [2021-11-25 19:11:26,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:26,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:11:26,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:11:26,230 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:11:26,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:11:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:26,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:11:26,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:11:26,397 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:11:26,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:11:26,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883131289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:26,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:11:26,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 19:11:26,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551476876] [2021-11-25 19:11:26,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:26,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:11:26,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:26,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:11:26,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:11:26,401 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) [2021-11-25 19:11:26,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:26,421 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2021-11-25 19:11:26,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:11:26,422 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 [2021-11-25 19:11:26,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:26,423 INFO L225 Difference]: With dead ends: 29 [2021-11-25 19:11:26,423 INFO L226 Difference]: Without dead ends: 17 [2021-11-25 19:11:26,424 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:11:26,426 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 16 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 [2021-11-25 19:11:26,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:11:26,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-25 19:11:26,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-25 19:11:26,431 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) [2021-11-25 19:11:26,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-11-25 19:11:26,433 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 21 [2021-11-25 19:11:26,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:26,433 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-11-25 19:11:26,433 INFO L471 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) [2021-11-25 19:11:26,434 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-11-25 19:11:26,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 19:11:26,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:26,435 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:11:26,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:11:26,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-25 19:11:26,652 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:26,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:26,653 INFO L85 PathProgramCache]: Analyzing trace with hash -807854650, now seen corresponding path program 1 times [2021-11-25 19:11:26,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:26,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578099701] [2021-11-25 19:11:26,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:26,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:26,709 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 19:11:26,709 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:26,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578099701] [2021-11-25 19:11:26,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578099701] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:11:26,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71378047] [2021-11-25 19:11:26,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:26,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:11:26,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:11:26,711 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:11:26,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:11:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:26,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:11:26,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:11:26,894 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:11:26,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:11:26,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71378047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:26,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:11:26,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 19:11:26,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023086086] [2021-11-25 19:11:26,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:26,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:11:26,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:26,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:11:26,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:11:26,901 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) [2021-11-25 19:11:26,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:26,924 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2021-11-25 19:11:26,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:11:26,925 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 [2021-11-25 19:11:26,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:26,927 INFO L225 Difference]: With dead ends: 27 [2021-11-25 19:11:26,927 INFO L226 Difference]: Without dead ends: 18 [2021-11-25 19:11:26,928 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:11:26,932 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 15 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 [2021-11-25 19:11:26,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:11:26,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-25 19:11:26,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-25 19:11:26,943 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) [2021-11-25 19:11:26,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2021-11-25 19:11:26,947 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 24 [2021-11-25 19:11:26,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:26,949 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-11-25 19:11:26,950 INFO L471 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) [2021-11-25 19:11:26,950 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2021-11-25 19:11:26,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 19:11:26,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:26,951 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:11:26,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-25 19:11:27,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:11:27,152 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:27,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:27,153 INFO L85 PathProgramCache]: Analyzing trace with hash 34772627, now seen corresponding path program 1 times [2021-11-25 19:11:27,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:27,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501118749] [2021-11-25 19:11:27,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:27,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:27,207 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 19:11:27,207 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:27,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501118749] [2021-11-25 19:11:27,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501118749] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:11:27,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31027328] [2021-11-25 19:11:27,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:27,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:11:27,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:11:27,212 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:11:27,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:11:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:27,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:11:27,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:11:27,361 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 19:11:27,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:11:27,441 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 19:11:27,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31027328] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:11:27,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1899051147] [2021-11-25 19:11:27,465 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:11:27,465 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:11:27,471 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:11:27,477 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:11:27,478 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:11:27,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:27,624 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:11:27,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:27,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:27,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:27,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:27,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2021-11-25 19:11:27,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:27,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:27,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:27,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:27,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:27,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:11:27,922 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-25 19:11:27,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 288 treesize of output 280 [2021-11-25 19:11:28,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:28,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:28,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:28,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:28,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:28,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:28,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:28,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:28,552 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-25 19:11:28,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:28,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:28,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:28,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:28,839 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2021-11-25 19:11:28,885 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:11:33,885 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '524#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (exists ((v_bor_~res~0_BEFORE_RETURN_6 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bor_~res~0_BEFORE_RETURN_6 4294967296) 2147483647) (mod v_bor_~res~0_BEFORE_RETURN_6 4294967296) (+ (- 4294967296) (mod v_bor_~res~0_BEFORE_RETURN_6 4294967296))))) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |#NULL.base| 0) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|))' at error location [2021-11-25 19:11:33,885 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:11:33,885 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:11:33,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2021-11-25 19:11:33,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715052591] [2021-11-25 19:11:33,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:11:33,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:11:33,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:33,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:11:33,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:11:33,888 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) [2021-11-25 19:11:33,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:33,918 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2021-11-25 19:11:33,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:11:33,919 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 [2021-11-25 19:11:33,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:33,920 INFO L225 Difference]: With dead ends: 36 [2021-11-25 19:11:33,920 INFO L226 Difference]: Without dead ends: 21 [2021-11-25 19:11:33,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:11:33,922 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 32 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 [2021-11-25 19:11:33,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:11:33,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-25 19:11:33,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-25 19:11:33,927 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) [2021-11-25 19:11:33,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-11-25 19:11:33,928 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2021-11-25 19:11:33,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:33,928 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-11-25 19:11:33,928 INFO L471 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) [2021-11-25 19:11:33,929 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-11-25 19:11:33,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 19:11:33,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:33,930 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:11:33,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-25 19:11:34,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:11:34,143 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:34,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:34,143 INFO L85 PathProgramCache]: Analyzing trace with hash 160034795, now seen corresponding path program 2 times [2021-11-25 19:11:34,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:34,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599203604] [2021-11-25 19:11:34,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:34,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:34,234 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 19:11:34,234 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:34,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599203604] [2021-11-25 19:11:34,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599203604] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:11:34,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138200360] [2021-11-25 19:11:34,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:11:34,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:11:34,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:11:34,236 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:11:34,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:11:34,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 19:11:34,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:11:34,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:11:34,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:11:34,360 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 19:11:34,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:11:34,436 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 19:11:34,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138200360] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:11:34,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [325096297] [2021-11-25 19:11:34,442 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:11:34,442 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:11:34,444 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:11:34,445 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:11:34,445 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:11:34,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:34,490 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:11:34,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:34,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:34,526 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:11:34,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:34,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:34,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2021-11-25 19:11:34,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:34,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:34,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:34,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:34,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:34,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:34,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:34,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:34,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:34,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:34,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:34,701 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-25 19:11:34,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 298 treesize of output 279 [2021-11-25 19:11:34,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:34,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:34,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:34,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:34,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:34,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:11:34,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:35,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:35,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:35,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:35,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:35,040 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 19:11:35,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:35,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:35,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:35,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:35,258 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2021-11-25 19:11:35,307 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:11:40,178 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '797#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((v_bor_~res~0_BEFORE_RETURN_12 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bor_~res~0_BEFORE_RETURN_12 4294967296) 2147483647) (mod v_bor_~res~0_BEFORE_RETURN_12 4294967296) (+ (- 4294967296) (mod v_bor_~res~0_BEFORE_RETURN_12 4294967296))))) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 19:11:40,178 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:11:40,178 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:11:40,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-25 19:11:40,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369208844] [2021-11-25 19:11:40,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:11:40,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:11:40,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:40,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:11:40,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:11:40,184 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) [2021-11-25 19:11:40,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:40,227 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2021-11-25 19:11:40,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:11:40,228 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 [2021-11-25 19:11:40,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:40,229 INFO L225 Difference]: With dead ends: 38 [2021-11-25 19:11:40,229 INFO L226 Difference]: Without dead ends: 24 [2021-11-25 19:11:40,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:11:40,231 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 32 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 [2021-11-25 19:11:40,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:11:40,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-25 19:11:40,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-25 19:11:40,236 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) [2021-11-25 19:11:40,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-11-25 19:11:40,237 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 28 [2021-11-25 19:11:40,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:40,238 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-11-25 19:11:40,238 INFO L471 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) [2021-11-25 19:11:40,238 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-11-25 19:11:40,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-25 19:11:40,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:40,240 INFO L514 BasicCegarLoop]: trace histogram [12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:11:40,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:11:40,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:11:40,455 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:40,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:40,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1885684020, now seen corresponding path program 3 times [2021-11-25 19:11:40,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:40,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737333543] [2021-11-25 19:11:40,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:40,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:40,565 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-25 19:11:40,565 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:40,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737333543] [2021-11-25 19:11:40,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737333543] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:11:40,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505309907] [2021-11-25 19:11:40,566 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:11:40,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:11:40,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:11:40,567 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:11:40,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 19:11:40,654 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:11:40,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:11:40,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:11:40,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:11:40,765 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 19:11:40,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:11:40,900 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 19:11:40,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505309907] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:11:40,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1766505533] [2021-11-25 19:11:40,903 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:11:40,903 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:11:40,903 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:11:40,904 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:11:40,904 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:11:40,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:40,951 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:11:40,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:40,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:40,981 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:11:40,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:41,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:41,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2021-11-25 19:11:41,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:41,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:41,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:41,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:41,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:41,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:11:41,131 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-25 19:11:41,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 288 treesize of output 280 [2021-11-25 19:11:41,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:41,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:41,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:41,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:41,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:41,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:11:41,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:41,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:41,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:41,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:41,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:41,474 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 19:11:41,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:41,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:41,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:41,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:41,664 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2021-11-25 19:11:41,695 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:11:42,506 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1141#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (exists ((v_bor_~res~0_BEFORE_RETURN_18 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bor_~res~0_BEFORE_RETURN_18 4294967296) 2147483647) (mod v_bor_~res~0_BEFORE_RETURN_18 4294967296) (+ (mod v_bor_~res~0_BEFORE_RETURN_18 4294967296) (- 4294967296))))) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 19:11:42,507 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:11:42,507 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:11:42,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2021-11-25 19:11:42,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685729861] [2021-11-25 19:11:42,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:11:42,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 19:11:42,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:42,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 19:11:42,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2021-11-25 19:11:42,510 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) [2021-11-25 19:11:42,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:42,571 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2021-11-25 19:11:42,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 19:11:42,572 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 [2021-11-25 19:11:42,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:42,573 INFO L225 Difference]: With dead ends: 49 [2021-11-25 19:11:42,573 INFO L226 Difference]: Without dead ends: 31 [2021-11-25 19:11:42,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2021-11-25 19:11:42,574 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:11:42,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:11:42,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-25 19:11:42,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-25 19:11:42,581 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) [2021-11-25 19:11:42,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-11-25 19:11:42,583 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2021-11-25 19:11:42,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:42,583 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-11-25 19:11:42,583 INFO L471 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) [2021-11-25 19:11:42,584 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-11-25 19:11:42,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-25 19:11:42,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:42,585 INFO L514 BasicCegarLoop]: trace histogram [12, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:11:42,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:11:42,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-25 19:11:42,803 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:42,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:42,803 INFO L85 PathProgramCache]: Analyzing trace with hash 210425085, now seen corresponding path program 4 times [2021-11-25 19:11:42,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:42,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114893993] [2021-11-25 19:11:42,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:42,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:42,964 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-25 19:11:42,964 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:42,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114893993] [2021-11-25 19:11:42,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114893993] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:11:42,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054103516] [2021-11-25 19:11:42,965 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 19:11:42,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:11:42,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:11:42,967 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:11:42,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:11:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:43,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:11:43,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:11:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-25 19:11:43,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:11:43,433 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-25 19:11:43,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054103516] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:11:43,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1201847706] [2021-11-25 19:11:43,436 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:11:43,437 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:11:43,437 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:11:43,437 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:11:43,437 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:11:43,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:43,475 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:11:43,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:43,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:43,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:43,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:43,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2021-11-25 19:11:43,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:43,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:43,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:43,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:43,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:43,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:43,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:43,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:43,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:43,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:43,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:43,638 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-25 19:11:43,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 298 treesize of output 279 [2021-11-25 19:11:43,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:43,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:43,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:43,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:43,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:43,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:11:43,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:43,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:43,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:43,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:43,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:43,927 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 19:11:43,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:43,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:43,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:43,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:44,158 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2021-11-25 19:11:44,199 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:11:44,939 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1574#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_bor_~res~0_BEFORE_RETURN_24 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bor_~res~0_BEFORE_RETURN_24 4294967296) 2147483647) (mod v_bor_~res~0_BEFORE_RETURN_24 4294967296) (+ (mod v_bor_~res~0_BEFORE_RETURN_24 4294967296) (- 4294967296))))) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 19:11:44,939 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:11:44,942 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:11:44,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2021-11-25 19:11:44,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454872551] [2021-11-25 19:11:44,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:11:44,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-25 19:11:44,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:44,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-25 19:11:44,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 19:11:44,946 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) [2021-11-25 19:11:45,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:45,008 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2021-11-25 19:11:45,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 19:11:45,009 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 [2021-11-25 19:11:45,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:45,010 INFO L225 Difference]: With dead ends: 62 [2021-11-25 19:11:45,010 INFO L226 Difference]: Without dead ends: 43 [2021-11-25 19:11:45,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 19:11:45,012 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 48 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, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:11:45,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:11:45,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-25 19:11:45,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-25 19:11:45,018 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) [2021-11-25 19:11:45,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-11-25 19:11:45,019 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 44 [2021-11-25 19:11:45,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:45,020 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-11-25 19:11:45,020 INFO L471 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) [2021-11-25 19:11:45,020 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2021-11-25 19:11:45,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-25 19:11:45,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:45,022 INFO L514 BasicCegarLoop]: trace histogram [22, 12, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:11:45,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:11:45,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-25 19:11:45,239 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:45,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:45,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1481216765, now seen corresponding path program 5 times [2021-11-25 19:11:45,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:45,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798992465] [2021-11-25 19:11:45,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:45,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-25 19:11:45,677 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:45,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798992465] [2021-11-25 19:11:45,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798992465] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:11:45,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664361373] [2021-11-25 19:11:45,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:11:45,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:11:45,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:11:45,679 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:11:45,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 19:11:45,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 19:11:45,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:11:45,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:11:45,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:11:45,964 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-11-25 19:11:45,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:11:46,156 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-11-25 19:11:46,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664361373] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:11:46,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [534609737] [2021-11-25 19:11:46,160 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:11:46,160 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:11:46,160 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:11:46,160 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:11:46,161 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:11:46,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:46,188 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:11:46,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:46,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:46,216 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:11:46,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:46,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:46,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2021-11-25 19:11:46,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:46,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:46,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:46,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:46,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:46,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:46,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:46,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:46,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:46,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:46,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:46,388 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-25 19:11:46,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 298 treesize of output 279 [2021-11-25 19:11:46,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:46,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:46,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:46,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:46,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:46,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:46,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:46,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:46,684 INFO L354 Elim1Store]: treesize reduction 60, result has 32.6 percent of original size [2021-11-25 19:11:46,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:46,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:46,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:46,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:46,879 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2021-11-25 19:11:46,906 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:11:50,005 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2139#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (exists ((v_bor_~res~0_BEFORE_RETURN_29 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bor_~res~0_BEFORE_RETURN_29 4294967296) 2147483647) (mod v_bor_~res~0_BEFORE_RETURN_29 4294967296) (+ (mod v_bor_~res~0_BEFORE_RETURN_29 4294967296) (- 4294967296))))) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 19:11:50,005 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:11:50,005 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:11:50,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 35 [2021-11-25 19:11:50,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795644145] [2021-11-25 19:11:50,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:11:50,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-25 19:11:50,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:50,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-25 19:11:50,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=1831, Unknown=0, NotChecked=0, Total=2256 [2021-11-25 19:11:50,009 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) [2021-11-25 19:11:50,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:50,130 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2021-11-25 19:11:50,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-25 19:11:50,135 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 [2021-11-25 19:11:50,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:50,136 INFO L225 Difference]: With dead ends: 69 [2021-11-25 19:11:50,136 INFO L226 Difference]: Without dead ends: 50 [2021-11-25 19:11:50,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=425, Invalid=1831, Unknown=0, NotChecked=0, Total=2256 [2021-11-25 19:11:50,139 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 120 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 [2021-11-25 19:11:50,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:11:50,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-25 19:11:50,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-25 19:11:50,150 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) [2021-11-25 19:11:50,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-11-25 19:11:50,157 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 56 [2021-11-25 19:11:50,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:50,158 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-11-25 19:11:50,159 INFO L471 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) [2021-11-25 19:11:50,159 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-11-25 19:11:50,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-25 19:11:50,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:50,164 INFO L514 BasicCegarLoop]: trace histogram [30, 23, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:11:50,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:11:50,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-25 19:11:50,391 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:50,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:50,391 INFO L85 PathProgramCache]: Analyzing trace with hash -10477499, now seen corresponding path program 6 times [2021-11-25 19:11:50,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:50,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947361345] [2021-11-25 19:11:50,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:50,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:50,880 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-25 19:11:50,880 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:50,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947361345] [2021-11-25 19:11:50,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947361345] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:11:50,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528677792] [2021-11-25 19:11:50,881 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:11:50,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:11:50,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:11:50,881 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:11:50,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 19:11:51,024 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:11:51,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:11:51,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-25 19:11:51,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:11:51,225 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-25 19:11:51,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:11:52,177 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-25 19:11:52,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528677792] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:11:52,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [672953539] [2021-11-25 19:11:52,180 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:11:52,180 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:11:52,180 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:11:52,181 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:11:52,181 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:11:52,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:52,219 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:11:52,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:52,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:52,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:52,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:52,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2021-11-25 19:11:52,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:52,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:52,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:52,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:52,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:52,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:52,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:52,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:52,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:52,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:52,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:52,389 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-25 19:11:52,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 298 treesize of output 279 [2021-11-25 19:11:52,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:52,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:52,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:52,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:52,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:52,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:52,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:52,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:52,724 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-25 19:11:52,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:52,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:11:52,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:52,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:11:52,947 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2021-11-25 19:11:52,974 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:11:55,920 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2862#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 19:11:55,920 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:11:55,920 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:11:55,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 26] total 51 [2021-11-25 19:11:55,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244211302] [2021-11-25 19:11:55,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:11:55,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-25 19:11:55,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:55,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-25 19:11:55,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1335, Invalid=2697, Unknown=0, NotChecked=0, Total=4032 [2021-11-25 19:11:55,925 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) [2021-11-25 19:11:56,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:56,060 INFO L93 Difference]: Finished difference Result 100 states and 132 transitions. [2021-11-25 19:11:56,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-25 19:11:56,061 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 [2021-11-25 19:11:56,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:56,062 INFO L225 Difference]: With dead ends: 100 [2021-11-25 19:11:56,062 INFO L226 Difference]: Without dead ends: 75 [2021-11-25 19:11:56,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1335, Invalid=2697, Unknown=0, NotChecked=0, Total=4032 [2021-11-25 19:11:56,065 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 96 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 [2021-11-25 19:11:56,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:11:56,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-25 19:11:56,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-11-25 19:11:56,074 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) [2021-11-25 19:11:56,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2021-11-25 19:11:56,076 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 75 [2021-11-25 19:11:56,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:56,080 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-11-25 19:11:56,080 INFO L471 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) [2021-11-25 19:11:56,080 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2021-11-25 19:11:56,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-25 19:11:56,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:56,086 INFO L514 BasicCegarLoop]: trace histogram [48, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:11:56,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:11:56,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:11:56,287 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:56,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:56,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1436572317, now seen corresponding path program 7 times [2021-11-25 19:11:56,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:56,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702103546] [2021-11-25 19:11:56,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:56,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:57,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-25 19:11:57,473 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:57,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702103546] [2021-11-25 19:11:57,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702103546] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:11:57,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926610807] [2021-11-25 19:11:57,474 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 19:11:57,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:11:57,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:11:57,475 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:11:57,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 19:11:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:57,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-25 19:11:57,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:11:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-25 19:11:57,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:00,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-25 19:12:00,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926610807] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:00,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [688592701] [2021-11-25 19:12:00,658 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:12:00,658 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:12:00,659 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:12:00,659 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:12:00,659 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:12:00,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:00,690 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:12:00,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:00,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:00,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:00,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:00,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2021-11-25 19:12:00,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:00,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:00,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:00,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:00,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:00,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:12:00,863 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-25 19:12:00,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 288 treesize of output 280 [2021-11-25 19:12:00,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:00,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:00,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:01,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:01,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:01,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:12:01,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:01,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:01,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:01,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:01,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:01,138 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 19:12:01,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:01,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:01,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:01,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:01,309 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2021-11-25 19:12:01,335 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:12:02,522 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3897#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_bor_~res~0_BEFORE_RETURN_41 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bor_~res~0_BEFORE_RETURN_41 4294967296) 2147483647) (mod v_bor_~res~0_BEFORE_RETURN_41 4294967296) (+ (- 4294967296) (mod v_bor_~res~0_BEFORE_RETURN_41 4294967296))))) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 19:12:02,522 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:12:02,522 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:12:02,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 51] total 101 [2021-11-25 19:12:02,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554937523] [2021-11-25 19:12:02,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:12:02,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-11-25 19:12:02,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:12:02,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-11-25 19:12:02,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5110, Invalid=7772, Unknown=0, NotChecked=0, Total=12882 [2021-11-25 19:12:02,532 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) [2021-11-25 19:12:02,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:02,753 INFO L93 Difference]: Finished difference Result 150 states and 207 transitions. [2021-11-25 19:12:02,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-11-25 19:12:02,754 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 [2021-11-25 19:12:02,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:02,756 INFO L225 Difference]: With dead ends: 150 [2021-11-25 19:12:02,756 INFO L226 Difference]: Without dead ends: 125 [2021-11-25 19:12:02,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2138 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=5110, Invalid=7772, Unknown=0, NotChecked=0, Total=12882 [2021-11-25 19:12:02,768 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 48 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 [2021-11-25 19:12:02,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:12:02,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-25 19:12:02,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-11-25 19:12:02,795 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) [2021-11-25 19:12:02,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2021-11-25 19:12:02,799 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 100 [2021-11-25 19:12:02,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:02,800 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2021-11-25 19:12:02,800 INFO L471 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) [2021-11-25 19:12:02,801 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2021-11-25 19:12:02,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-25 19:12:02,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:02,806 INFO L514 BasicCegarLoop]: trace histogram [98, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:02,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:03,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 19:12:03,030 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:03,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:03,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1773791133, now seen corresponding path program 8 times [2021-11-25 19:12:03,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:12:03,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265296878] [2021-11-25 19:12:03,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:03,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:12:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:07,171 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-25 19:12:07,171 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:12:07,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265296878] [2021-11-25 19:12:07,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265296878] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:12:07,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414470812] [2021-11-25 19:12:07,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:12:07,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:07,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:12:07,173 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:12:07,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 19:12:07,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 19:12:07,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:12:07,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:12:07,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:07,651 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 246 proven. 3 refuted. 0 times theorem prover too weak. 5139 trivial. 0 not checked. [2021-11-25 19:12:07,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:07,932 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5385 trivial. 0 not checked. [2021-11-25 19:12:07,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414470812] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:07,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2144935566] [2021-11-25 19:12:07,934 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:12:07,935 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:12:07,935 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:12:07,935 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:12:07,935 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:12:07,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:07,962 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:12:07,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:07,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:07,986 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:12:07,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:08,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:08,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2021-11-25 19:12:08,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:08,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:08,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:08,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:08,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:08,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:08,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:08,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:08,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:08,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:08,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:08,160 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-25 19:12:08,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 298 treesize of output 279 [2021-11-25 19:12:08,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:08,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:08,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:08,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:08,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:08,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:12:08,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:08,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:08,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:08,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:08,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:08,404 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 19:12:08,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:08,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:08,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:08,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:08,564 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2021-11-25 19:12:08,592 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:12:14,318 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5438#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |#NULL.base| 0) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|))' at error location [2021-11-25 19:12:14,318 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:12:14,318 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:12:14,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 5, 5] total 107 [2021-11-25 19:12:14,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777119003] [2021-11-25 19:12:14,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:12:14,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2021-11-25 19:12:14,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:12:14,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-11-25 19:12:14,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5137, Invalid=9143, Unknown=0, NotChecked=0, Total=14280 [2021-11-25 19:12:14,327 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) [2021-11-25 19:12:14,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:14,491 INFO L93 Difference]: Finished difference Result 155 states and 167 transitions. [2021-11-25 19:12:14,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-11-25 19:12:14,492 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 [2021-11-25 19:12:14,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:14,493 INFO L225 Difference]: With dead ends: 155 [2021-11-25 19:12:14,494 INFO L226 Difference]: Without dead ends: 130 [2021-11-25 19:12:14,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1988 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=5137, Invalid=9143, Unknown=0, NotChecked=0, Total=14280 [2021-11-25 19:12:14,497 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 87 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 [2021-11-25 19:12:14,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:12:14,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-25 19:12:14,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-11-25 19:12:14,509 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) [2021-11-25 19:12:14,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 134 transitions. [2021-11-25 19:12:14,510 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 134 transitions. Word has length 150 [2021-11-25 19:12:14,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:14,511 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 134 transitions. [2021-11-25 19:12:14,511 INFO L471 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) [2021-11-25 19:12:14,512 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 134 transitions. [2021-11-25 19:12:14,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-25 19:12:14,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:14,514 INFO L514 BasicCegarLoop]: trace histogram [99, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:14,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:14,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-25 19:12:14,719 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:14,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:14,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1239752187, now seen corresponding path program 9 times [2021-11-25 19:12:14,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:12:14,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182627722] [2021-11-25 19:12:14,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:14,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:12:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:18,748 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2021-11-25 19:12:18,748 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:12:18,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182627722] [2021-11-25 19:12:18,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182627722] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:12:18,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096886858] [2021-11-25 19:12:18,749 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:12:18,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:18,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:12:18,754 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:12:18,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-25 19:12:19,046 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:12:19,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:12:19,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 101 conjunts are in the unsatisfiable core [2021-11-25 19:12:19,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:19,448 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2021-11-25 19:12:19,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:19,921 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2021-11-25 19:12:19,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096886858] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:19,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [775763453] [2021-11-25 19:12:19,924 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:12:19,924 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:12:19,925 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:12:19,925 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:12:19,925 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:12:19,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:19,956 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:12:19,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:19,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:19,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:20,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:20,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2021-11-25 19:12:20,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:20,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:20,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:20,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:20,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:20,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:20,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:20,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:20,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:20,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:20,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:20,116 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-25 19:12:20,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 298 treesize of output 279 [2021-11-25 19:12:20,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:20,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:20,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:20,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:20,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:20,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:12:20,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:20,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:20,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:20,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:20,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:20,385 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 19:12:20,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:20,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:20,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:20,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:20,581 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2021-11-25 19:12:20,625 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:12:26,694 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7025#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (exists ((v_bor_~res~0_BEFORE_RETURN_54 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bor_~res~0_BEFORE_RETURN_54 4294967296) 2147483647) (mod v_bor_~res~0_BEFORE_RETURN_54 4294967296) (+ (mod v_bor_~res~0_BEFORE_RETURN_54 4294967296) (- 4294967296))))) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 19:12:26,694 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:12:26,694 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:12:26,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101, 102] total 103 [2021-11-25 19:12:26,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513329211] [2021-11-25 19:12:26,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:12:26,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-11-25 19:12:26,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:12:26,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-11-25 19:12:26,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5313, Invalid=8027, Unknown=0, NotChecked=0, Total=13340 [2021-11-25 19:12:26,698 INFO L87 Difference]: Start difference. First operand 130 states and 134 transitions. Second operand has 103 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 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) [2021-11-25 19:12:26,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:26,827 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2021-11-25 19:12:26,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-11-25 19:12:26,839 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 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 [2021-11-25 19:12:26,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:26,841 INFO L225 Difference]: With dead ends: 160 [2021-11-25 19:12:26,842 INFO L226 Difference]: Without dead ends: 131 [2021-11-25 19:12:26,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 450 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1546 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=5313, Invalid=8027, Unknown=0, NotChecked=0, Total=13340 [2021-11-25 19:12:26,846 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:26,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:12:26,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-25 19:12:26,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-11-25 19:12:26,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 126 states have (on average 1.0238095238095237) internal successors, (129), 126 states have internal predecessors, (129), 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) [2021-11-25 19:12:26,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2021-11-25 19:12:26,873 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 155 [2021-11-25 19:12:26,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:26,874 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2021-11-25 19:12:26,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 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) [2021-11-25 19:12:26,874 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2021-11-25 19:12:26,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-25 19:12:26,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:26,877 INFO L514 BasicCegarLoop]: trace histogram [100, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:26,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:27,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-25 19:12:27,103 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:27,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:27,103 INFO L85 PathProgramCache]: Analyzing trace with hash -981192611, now seen corresponding path program 10 times [2021-11-25 19:12:27,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:12:27,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440593082] [2021-11-25 19:12:27,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:27,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:12:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:27,372 INFO L134 CoverageAnalysis]: Checked inductivity of 5605 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2021-11-25 19:12:27,372 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:12:27,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440593082] [2021-11-25 19:12:27,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440593082] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:12:27,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843590386] [2021-11-25 19:12:27,373 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 19:12:27,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:27,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:12:27,374 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:12:27,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-25 19:12:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:27,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 1170 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:12:27,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:27,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5605 backedges. 244 proven. 55 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2021-11-25 19:12:27,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:28,388 INFO L134 CoverageAnalysis]: Checked inductivity of 5605 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2021-11-25 19:12:28,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843590386] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:28,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1787087184] [2021-11-25 19:12:28,391 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:12:28,391 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:12:28,391 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:12:28,391 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:12:28,391 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:12:28,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:28,422 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:12:28,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:28,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:28,448 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:12:28,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:28,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:28,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2021-11-25 19:12:28,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:28,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:28,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:28,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:28,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:28,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:12:28,590 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-25 19:12:28,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 288 treesize of output 280 [2021-11-25 19:12:28,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:28,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:28,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:28,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:28,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:28,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:12:28,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:28,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:28,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:28,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:28,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:28,881 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 19:12:28,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:28,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:28,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:28,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:29,032 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2021-11-25 19:12:29,072 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:12:33,896 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8552#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_bor_~res~0_BEFORE_RETURN_60 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bor_~res~0_BEFORE_RETURN_60 4294967296) 2147483647) (mod v_bor_~res~0_BEFORE_RETURN_60 4294967296) (+ (- 4294967296) (mod v_bor_~res~0_BEFORE_RETURN_60 4294967296))))) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 19:12:33,897 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:12:33,897 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:12:33,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-11-25 19:12:33,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472875663] [2021-11-25 19:12:33,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:12:33,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-25 19:12:33,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:12:33,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-25 19:12:33,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 19:12:33,899 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:12:33,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:33,958 INFO L93 Difference]: Finished difference Result 171 states and 192 transitions. [2021-11-25 19:12:33,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 19:12:33,959 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2021-11-25 19:12:33,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:33,961 INFO L225 Difference]: With dead ends: 171 [2021-11-25 19:12:33,961 INFO L226 Difference]: Without dead ends: 143 [2021-11-25 19:12:33,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 19:12:33,962 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:33,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:12:33,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-25 19:12:33,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-11-25 19:12:33,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 138 states have (on average 1.0217391304347827) internal successors, (141), 138 states have internal predecessors, (141), 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) [2021-11-25 19:12:33,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 147 transitions. [2021-11-25 19:12:33,974 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 147 transitions. Word has length 156 [2021-11-25 19:12:33,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:33,975 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 147 transitions. [2021-11-25 19:12:33,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:12:33,976 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 147 transitions. [2021-11-25 19:12:33,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-25 19:12:33,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:33,979 INFO L514 BasicCegarLoop]: trace histogram [100, 66, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:34,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:34,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:34,203 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:34,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:34,203 INFO L85 PathProgramCache]: Analyzing trace with hash 786965917, now seen corresponding path program 11 times [2021-11-25 19:12:34,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:12:34,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857151938] [2021-11-25 19:12:34,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:34,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:12:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:34,757 INFO L134 CoverageAnalysis]: Checked inductivity of 7423 backedges. 0 proven. 1313 refuted. 0 times theorem prover too weak. 6110 trivial. 0 not checked. [2021-11-25 19:12:34,757 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:12:34,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857151938] [2021-11-25 19:12:34,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857151938] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:12:34,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133179573] [2021-11-25 19:12:34,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:12:34,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:34,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:12:34,763 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:12:34,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-25 19:12:35,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 19:12:35,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:12:35,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:12:35,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:35,502 INFO L134 CoverageAnalysis]: Checked inductivity of 7423 backedges. 1062 proven. 21 refuted. 0 times theorem prover too weak. 6340 trivial. 0 not checked. [2021-11-25 19:12:35,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 7423 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 7402 trivial. 0 not checked. [2021-11-25 19:12:35,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133179573] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:35,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2007523408] [2021-11-25 19:12:35,871 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:12:35,872 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:12:35,872 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:12:35,872 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:12:35,872 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:12:35,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:35,919 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:12:35,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:35,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:35,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:35,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:35,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2021-11-25 19:12:36,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:36,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:36,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:36,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:36,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:36,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:12:36,080 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-25 19:12:36,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 288 treesize of output 280 [2021-11-25 19:12:36,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:36,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:36,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:36,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:36,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:36,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:12:36,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:36,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:36,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:36,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:36,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:36,356 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 19:12:36,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:36,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:36,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:36,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:36,518 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2021-11-25 19:12:36,552 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:12:39,848 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10355#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |#NULL.base| 0) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|))' at error location [2021-11-25 19:12:39,848 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:12:39,848 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:12:39,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9, 9] total 39 [2021-11-25 19:12:39,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978202764] [2021-11-25 19:12:39,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:12:39,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-25 19:12:39,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:12:39,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-25 19:12:39,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=2173, Unknown=0, NotChecked=0, Total=2652 [2021-11-25 19:12:39,850 INFO L87 Difference]: Start difference. First operand 143 states and 147 transitions. Second operand has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 19:12:39,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:39,931 INFO L93 Difference]: Finished difference Result 192 states and 210 transitions. [2021-11-25 19:12:39,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-25 19:12:39,931 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 2 states have call successors, (5), 2 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 192 [2021-11-25 19:12:39,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:39,933 INFO L225 Difference]: With dead ends: 192 [2021-11-25 19:12:39,933 INFO L226 Difference]: Without dead ends: 152 [2021-11-25 19:12:39,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=479, Invalid=2173, Unknown=0, NotChecked=0, Total=2652 [2021-11-25 19:12:39,935 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:39,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:12:39,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-25 19:12:39,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-25 19:12:39,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 147 states have (on average 1.0204081632653061) internal successors, (150), 147 states have internal predecessors, (150), 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) [2021-11-25 19:12:39,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 156 transitions. [2021-11-25 19:12:39,944 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 156 transitions. Word has length 192 [2021-11-25 19:12:39,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:39,944 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 156 transitions. [2021-11-25 19:12:39,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 19:12:39,945 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 156 transitions. [2021-11-25 19:12:39,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-25 19:12:39,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:39,948 INFO L514 BasicCegarLoop]: trace histogram [100, 69, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:39,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:40,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:40,162 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:40,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:40,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1469567442, now seen corresponding path program 12 times [2021-11-25 19:12:40,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:12:40,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479452727] [2021-11-25 19:12:40,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:40,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:12:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:40,742 INFO L134 CoverageAnalysis]: Checked inductivity of 7717 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 6287 trivial. 0 not checked. [2021-11-25 19:12:40,742 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:12:40,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479452727] [2021-11-25 19:12:40,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479452727] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:12:40,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155385787] [2021-11-25 19:12:40,743 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:12:40,743 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:40,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:12:40,747 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:12:40,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-25 19:12:41,115 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:12:41,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:12:41,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 1343 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-25 19:12:41,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:41,413 INFO L134 CoverageAnalysis]: Checked inductivity of 7717 backedges. 1154 proven. 276 refuted. 0 times theorem prover too weak. 6287 trivial. 0 not checked. [2021-11-25 19:12:41,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:42,302 INFO L134 CoverageAnalysis]: Checked inductivity of 7717 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 6287 trivial. 0 not checked. [2021-11-25 19:12:42,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155385787] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:42,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [359905997] [2021-11-25 19:12:42,305 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:12:42,305 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:12:42,305 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:12:42,306 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:12:42,306 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:12:42,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:42,337 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:12:42,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:42,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:42,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:42,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:42,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2021-11-25 19:12:42,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:42,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:42,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:42,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:42,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:42,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:12:42,518 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-25 19:12:42,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 288 treesize of output 280 [2021-11-25 19:12:42,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:42,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:42,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:42,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:42,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:42,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:42,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:42,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:42,838 INFO L354 Elim1Store]: treesize reduction 60, result has 32.6 percent of original size [2021-11-25 19:12:42,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:42,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:42,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:42,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:43,009 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2021-11-25 19:12:43,031 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:12:45,939 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12296#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((v_bor_~res~0_BEFORE_RETURN_72 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bor_~res~0_BEFORE_RETURN_72 4294967296) 2147483647) (mod v_bor_~res~0_BEFORE_RETURN_72 4294967296) (+ (mod v_bor_~res~0_BEFORE_RETURN_72 4294967296) (- 4294967296))))) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 19:12:45,939 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:12:45,939 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:12:45,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2021-11-25 19:12:45,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680197270] [2021-11-25 19:12:45,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:12:45,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-25 19:12:45,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:12:45,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-25 19:12:45,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1335, Invalid=2697, Unknown=0, NotChecked=0, Total=4032 [2021-11-25 19:12:45,943 INFO L87 Difference]: Start difference. First operand 152 states and 156 transitions. Second operand has 51 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:12:46,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:46,028 INFO L93 Difference]: Finished difference Result 226 states and 260 transitions. [2021-11-25 19:12:46,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-25 19:12:46,029 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 203 [2021-11-25 19:12:46,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:46,030 INFO L225 Difference]: With dead ends: 226 [2021-11-25 19:12:46,030 INFO L226 Difference]: Without dead ends: 177 [2021-11-25 19:12:46,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1335, Invalid=2697, Unknown=0, NotChecked=0, Total=4032 [2021-11-25 19:12:46,032 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:46,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:12:46,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-25 19:12:46,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-11-25 19:12:46,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 172 states have (on average 1.0174418604651163) internal successors, (175), 172 states have internal predecessors, (175), 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) [2021-11-25 19:12:46,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 181 transitions. [2021-11-25 19:12:46,042 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 181 transitions. Word has length 203 [2021-11-25 19:12:46,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:46,042 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 181 transitions. [2021-11-25 19:12:46,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:12:46,043 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 181 transitions. [2021-11-25 19:12:46,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-11-25 19:12:46,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:46,044 INFO L514 BasicCegarLoop]: trace histogram [144, 100, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:46,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:46,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-25 19:12:46,245 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:46,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:46,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1704592509, now seen corresponding path program 13 times [2021-11-25 19:12:46,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:12:46,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613294865] [2021-11-25 19:12:46,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:46,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:12:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:47,588 INFO L134 CoverageAnalysis]: Checked inductivity of 15892 backedges. 0 proven. 5980 refuted. 0 times theorem prover too weak. 9912 trivial. 0 not checked. [2021-11-25 19:12:47,588 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:12:47,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613294865] [2021-11-25 19:12:47,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613294865] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:12:47,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401348838] [2021-11-25 19:12:47,589 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 19:12:47,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:47,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:12:47,596 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:12:47,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-25 19:12:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:48,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 1568 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-25 19:12:48,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:48,462 INFO L134 CoverageAnalysis]: Checked inductivity of 15892 backedges. 4804 proven. 1176 refuted. 0 times theorem prover too weak. 9912 trivial. 0 not checked. [2021-11-25 19:12:48,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:51,424 INFO L134 CoverageAnalysis]: Checked inductivity of 15892 backedges. 0 proven. 5980 refuted. 0 times theorem prover too weak. 9912 trivial. 0 not checked. [2021-11-25 19:12:51,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401348838] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:51,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1913256820] [2021-11-25 19:12:51,427 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:12:51,427 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:12:51,427 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:12:51,427 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:12:51,428 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:12:51,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:51,480 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:12:51,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:51,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:51,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:51,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:51,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2021-11-25 19:12:51,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:51,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:51,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:51,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:51,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:51,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:12:51,608 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-25 19:12:51,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 288 treesize of output 280 [2021-11-25 19:12:51,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:51,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:51,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:51,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:51,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:51,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:12:51,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:51,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:51,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:51,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:51,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:51,958 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 19:12:51,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:51,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:51,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:51,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:12:52,112 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2021-11-25 19:12:52,133 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:12:53,241 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14855#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (exists ((v_bor_~res~0_BEFORE_RETURN_77 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bor_~res~0_BEFORE_RETURN_77 4294967296) 2147483647) (mod v_bor_~res~0_BEFORE_RETURN_77 4294967296) (+ (mod v_bor_~res~0_BEFORE_RETURN_77 4294967296) (- 4294967296))))) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 19:12:53,241 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:12:53,241 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:12:53,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 101 [2021-11-25 19:12:53,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391621880] [2021-11-25 19:12:53,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:12:53,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-11-25 19:12:53,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:12:53,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-11-25 19:12:53,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5110, Invalid=7772, Unknown=0, NotChecked=0, Total=12882 [2021-11-25 19:12:53,245 INFO L87 Difference]: Start difference. First operand 177 states and 181 transitions. Second operand has 101 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 101 states have internal predecessors, (118), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:12:53,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:53,416 INFO L93 Difference]: Finished difference Result 301 states and 360 transitions. [2021-11-25 19:12:53,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-11-25 19:12:53,416 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 101 states have internal predecessors, (118), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 278 [2021-11-25 19:12:53,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:53,424 INFO L225 Difference]: With dead ends: 301 [2021-11-25 19:12:53,424 INFO L226 Difference]: Without dead ends: 227 [2021-11-25 19:12:53,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 883 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2138 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=5110, Invalid=7772, Unknown=0, NotChecked=0, Total=12882 [2021-11-25 19:12:53,426 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:53,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:12:53,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-25 19:12:53,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-25 19:12:53,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 222 states have (on average 1.0135135135135136) internal successors, (225), 222 states have internal predecessors, (225), 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) [2021-11-25 19:12:53,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 231 transitions. [2021-11-25 19:12:53,442 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 231 transitions. Word has length 278 [2021-11-25 19:12:53,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:53,442 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 231 transitions. [2021-11-25 19:12:53,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 101 states have internal predecessors, (118), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:12:53,443 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 231 transitions. [2021-11-25 19:12:53,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-11-25 19:12:53,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:53,446 INFO L514 BasicCegarLoop]: trace histogram [294, 100, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:53,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:53,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-25 19:12:53,655 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:53,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:53,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1810292317, now seen corresponding path program 14 times [2021-11-25 19:12:53,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:12:53,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095154197] [2021-11-25 19:12:53,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:53,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:12:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:57,794 INFO L134 CoverageAnalysis]: Checked inductivity of 49117 backedges. 0 proven. 24455 refuted. 0 times theorem prover too weak. 24662 trivial. 0 not checked. [2021-11-25 19:12:57,794 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:12:57,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095154197] [2021-11-25 19:12:57,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095154197] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:12:57,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820029626] [2021-11-25 19:12:57,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:12:57,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:57,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:12:57,795 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:12:57,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-25 19:13:00,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-25 19:13:00,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:13:00,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-25 19:13:00,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:01,927 INFO L134 CoverageAnalysis]: Checked inductivity of 49117 backedges. 19606 proven. 105 refuted. 0 times theorem prover too weak. 29406 trivial. 0 not checked. [2021-11-25 19:13:01,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:03,192 INFO L134 CoverageAnalysis]: Checked inductivity of 49117 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 49012 trivial. 0 not checked. [2021-11-25 19:13:03,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820029626] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:03,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1474699389] [2021-11-25 19:13:03,194 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:13:03,195 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:13:03,195 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:13:03,195 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:13:03,195 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:13:03,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:03,225 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:13:03,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:13:03,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:03,248 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:13:03,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:13:03,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:03,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2021-11-25 19:13:03,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:03,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:03,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:03,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:03,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:03,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:03,394 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-25 19:13:03,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 288 treesize of output 280 [2021-11-25 19:13:03,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:13:03,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:03,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:13:03,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:03,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:03,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:03,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:13:03,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:03,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:03,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:03,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:03,714 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 19:13:03,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:13:03,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:03,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:13:03,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:13:03,867 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2021-11-25 19:13:03,892 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:13:05,692 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18594#(and (exists ((v_bor_~res~0_BEFORE_RETURN_84 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bor_~res~0_BEFORE_RETURN_84 4294967296) 2147483647) (mod v_bor_~res~0_BEFORE_RETURN_84 4294967296) (+ (mod v_bor_~res~0_BEFORE_RETURN_84 4294967296) (- 4294967296))))) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 19:13:05,692 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:13:05,692 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:13:05,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 17, 17] total 131 [2021-11-25 19:13:05,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928419061] [2021-11-25 19:13:05,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:13:05,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2021-11-25 19:13:05,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:13:05,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2021-11-25 19:13:05,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5605, Invalid=14987, Unknown=0, NotChecked=0, Total=20592 [2021-11-25 19:13:05,699 INFO L87 Difference]: Start difference. First operand 227 states and 231 transitions. Second operand has 131 states, 131 states have (on average 1.1374045801526718) internal successors, (149), 131 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 19:13:05,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:05,959 INFO L93 Difference]: Finished difference Result 368 states and 394 transitions. [2021-11-25 19:13:05,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-11-25 19:13:05,960 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 1.1374045801526718) internal successors, (149), 131 states have internal predecessors, (149), 2 states have call successors, (5), 2 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 428 [2021-11-25 19:13:05,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:05,962 INFO L225 Difference]: With dead ends: 368 [2021-11-25 19:13:05,963 INFO L226 Difference]: Without dead ends: 244 [2021-11-25 19:13:05,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1383 GetRequests, 1241 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4808 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=5605, Invalid=14987, Unknown=0, NotChecked=0, Total=20592 [2021-11-25 19:13:05,966 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:05,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:13:05,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-25 19:13:05,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-11-25 19:13:05,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 239 states have (on average 1.0125523012552302) internal successors, (242), 239 states have internal predecessors, (242), 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) [2021-11-25 19:13:05,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 248 transitions. [2021-11-25 19:13:05,983 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 248 transitions. Word has length 428 [2021-11-25 19:13:05,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:05,983 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 248 transitions. [2021-11-25 19:13:05,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 1.1374045801526718) internal successors, (149), 131 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 19:13:05,984 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 248 transitions. [2021-11-25 19:13:05,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2021-11-25 19:13:05,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:05,989 INFO L514 BasicCegarLoop]: trace histogram [297, 100, 30, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:06,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:06,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:06,215 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:06,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:06,215 INFO L85 PathProgramCache]: Analyzing trace with hash -2018114578, now seen corresponding path program 15 times [2021-11-25 19:13:06,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:13:06,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037149843] [2021-11-25 19:13:06,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:06,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:13:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:07,230 INFO L134 CoverageAnalysis]: Checked inductivity of 50371 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 49906 trivial. 0 not checked. [2021-11-25 19:13:07,230 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:13:07,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037149843] [2021-11-25 19:13:07,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037149843] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:13:07,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965726267] [2021-11-25 19:13:07,230 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:13:07,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:07,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:13:07,231 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:13:07,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-25 19:13:07,728 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:13:07,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:13:07,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 2139 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-25 19:13:07,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 50371 backedges. 20004 proven. 465 refuted. 0 times theorem prover too weak. 29902 trivial. 0 not checked. [2021-11-25 19:13:08,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:10,068 INFO L134 CoverageAnalysis]: Checked inductivity of 50371 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 49906 trivial. 0 not checked. [2021-11-25 19:13:10,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965726267] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:10,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1261356236] [2021-11-25 19:13:10,070 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:13:10,071 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:13:10,071 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:13:10,071 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:13:10,071 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:13:10,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:10,099 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:13:10,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:13:10,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:10,125 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:13:10,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:13:10,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:10,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2021-11-25 19:13:10,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:10,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:10,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:10,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:10,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:10,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:10,276 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-25 19:13:10,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 288 treesize of output 280 [2021-11-25 19:13:10,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:13:10,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:10,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:13:10,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:10,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:13:10,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:10,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:10,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:10,608 INFO L354 Elim1Store]: treesize reduction 60, result has 32.6 percent of original size [2021-11-25 19:13:10,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:13:10,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:10,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:13:10,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:13:10,768 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2021-11-25 19:13:10,795 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:13:13,828 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22549#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 19:13:13,828 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:13:13,828 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:13:13,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 65 [2021-11-25 19:13:13,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118775646] [2021-11-25 19:13:13,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:13:13,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-11-25 19:13:13,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:13:13,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-11-25 19:13:13,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2139, Invalid=3866, Unknown=1, NotChecked=0, Total=6006 [2021-11-25 19:13:13,831 INFO L87 Difference]: Start difference. First operand 244 states and 248 transitions. Second operand has 65 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:13:13,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:13,927 INFO L93 Difference]: Finished difference Result 383 states and 419 transitions. [2021-11-25 19:13:13,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-25 19:13:13,927 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 447 [2021-11-25 19:13:13,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:13,929 INFO L225 Difference]: With dead ends: 383 [2021-11-25 19:13:13,929 INFO L226 Difference]: Without dead ends: 276 [2021-11-25 19:13:13,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1372 GetRequests, 1296 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1364 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2139, Invalid=3866, Unknown=1, NotChecked=0, Total=6006 [2021-11-25 19:13:13,931 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:13,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:13:13,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-25 19:13:13,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-11-25 19:13:13,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 271 states have (on average 1.011070110701107) internal successors, (274), 271 states have internal predecessors, (274), 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) [2021-11-25 19:13:13,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 280 transitions. [2021-11-25 19:13:13,947 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 280 transitions. Word has length 447 [2021-11-25 19:13:13,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:13,948 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 280 transitions. [2021-11-25 19:13:13,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:13:13,948 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 280 transitions. [2021-11-25 19:13:13,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2021-11-25 19:13:13,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:13,953 INFO L514 BasicCegarLoop]: trace histogram [297, 100, 62, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:13,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:14,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-25 19:13:14,159 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:14,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:14,159 INFO L85 PathProgramCache]: Analyzing trace with hash 542916078, now seen corresponding path program 16 times [2021-11-25 19:13:14,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:13:14,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445369641] [2021-11-25 19:13:14,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:14,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:13:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:16,369 INFO L134 CoverageAnalysis]: Checked inductivity of 51859 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 49906 trivial. 0 not checked. [2021-11-25 19:13:16,370 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:13:16,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445369641] [2021-11-25 19:13:16,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445369641] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:13:16,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494833332] [2021-11-25 19:13:16,370 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 19:13:16,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:16,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:13:16,375 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:13:16,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-25 19:13:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:16,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 2363 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-25 19:13:16,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:17,728 INFO L134 CoverageAnalysis]: Checked inductivity of 51859 backedges. 20004 proven. 1953 refuted. 0 times theorem prover too weak. 29902 trivial. 0 not checked. [2021-11-25 19:13:17,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:20,372 INFO L134 CoverageAnalysis]: Checked inductivity of 51859 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 49906 trivial. 0 not checked. [2021-11-25 19:13:20,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494833332] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:20,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [678954168] [2021-11-25 19:13:20,375 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:13:20,375 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:13:20,375 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:13:20,375 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:13:20,376 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:13:20,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,413 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:13:20,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:13:20,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,436 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:13:20,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:13:20,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2021-11-25 19:13:20,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,553 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-25 19:13:20,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 298 treesize of output 279 [2021-11-25 19:13:20,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:13:20,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:13:20,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:20,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:13:20,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,785 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 19:13:20,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:13:20,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:13:20,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:13:20,927 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2021-11-25 19:13:20,958 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:13:26,284 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26829#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0) (exists ((v_bor_~res~0_BEFORE_RETURN_96 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bor_~res~0_BEFORE_RETURN_96 4294967296) 2147483647) (mod v_bor_~res~0_BEFORE_RETURN_96 4294967296) (+ (mod v_bor_~res~0_BEFORE_RETURN_96 4294967296) (- 4294967296))))))' at error location [2021-11-25 19:13:26,284 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:13:26,284 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:13:26,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 102 [2021-11-25 19:13:26,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544367494] [2021-11-25 19:13:26,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:13:26,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2021-11-25 19:13:26,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:13:26,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-11-25 19:13:26,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5211, Invalid=7899, Unknown=0, NotChecked=0, Total=13110 [2021-11-25 19:13:26,288 INFO L87 Difference]: Start difference. First operand 276 states and 280 transitions. Second operand has 102 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 102 states have internal predecessors, (117), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:13:26,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:26,492 INFO L93 Difference]: Finished difference Result 420 states and 461 transitions. [2021-11-25 19:13:26,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-11-25 19:13:26,493 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 102 states have internal predecessors, (117), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 479 [2021-11-25 19:13:26,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:26,496 INFO L225 Difference]: With dead ends: 420 [2021-11-25 19:13:26,497 INFO L226 Difference]: Without dead ends: 313 [2021-11-25 19:13:26,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1500 GetRequests, 1386 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2022 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=5211, Invalid=7899, Unknown=0, NotChecked=0, Total=13110 [2021-11-25 19:13:26,500 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:26,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:13:26,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-11-25 19:13:26,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-11-25 19:13:26,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 308 states have (on average 1.0097402597402598) internal successors, (311), 308 states have internal predecessors, (311), 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) [2021-11-25 19:13:26,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 317 transitions. [2021-11-25 19:13:26,522 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 317 transitions. Word has length 479 [2021-11-25 19:13:26,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:26,524 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 317 transitions. [2021-11-25 19:13:26,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 102 states have internal predecessors, (117), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:13:26,525 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 317 transitions. [2021-11-25 19:13:26,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2021-11-25 19:13:26,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:26,530 INFO L514 BasicCegarLoop]: trace histogram [297, 100, 99, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:26,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:26,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:26,750 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:26,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:26,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1090664405, now seen corresponding path program 17 times [2021-11-25 19:13:26,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:13:26,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531400596] [2021-11-25 19:13:26,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:26,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:13:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:13:41,100 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 19:13:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:13:46,482 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 19:13:46,485 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 19:13:46,486 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:13:46,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 19:13:46,491 INFO L732 BasicCegarLoop]: Path program histogram: [17, 1, 1, 1] [2021-11-25 19:13:46,498 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:13:46,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:13:46 BoogieIcfgContainer [2021-11-25 19:13:46,847 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:13:46,848 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:13:46,848 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:13:46,848 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:13:46,849 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:11:25" (3/4) ... [2021-11-25 19:13:46,851 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 19:13:46,851 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:13:46,852 INFO L158 Benchmark]: Toolchain (without parser) took 142118.28ms. Allocated memory was 107.0MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 64.4MB in the beginning and 850.7MB in the end (delta: -786.3MB). Peak memory consumption was 549.2MB. Max. memory is 16.1GB. [2021-11-25 19:13:46,852 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 107.0MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:13:46,852 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.15ms. Allocated memory is still 107.0MB. Free memory was 64.2MB in the beginning and 80.6MB in the end (delta: -16.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 19:13:46,853 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.72ms. Allocated memory is still 107.0MB. Free memory was 80.6MB in the beginning and 79.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:13:46,853 INFO L158 Benchmark]: Boogie Preprocessor took 49.83ms. Allocated memory is still 107.0MB. Free memory was 79.0MB in the beginning and 77.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:13:46,853 INFO L158 Benchmark]: RCFGBuilder took 476.21ms. Allocated memory is still 107.0MB. Free memory was 77.5MB in the beginning and 65.9MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 19:13:46,854 INFO L158 Benchmark]: TraceAbstraction took 141261.01ms. Allocated memory was 107.0MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 65.3MB in the beginning and 851.8MB in the end (delta: -786.4MB). Peak memory consumption was 752.7MB. Max. memory is 16.1GB. [2021-11-25 19:13:46,854 INFO L158 Benchmark]: Witness Printer took 3.79ms. Allocated memory is still 1.4GB. Free memory was 851.8MB in the beginning and 850.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:13:46,855 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 107.0MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 280.15ms. Allocated memory is still 107.0MB. Free memory was 64.2MB in the beginning and 80.6MB in the end (delta: -16.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.72ms. Allocated memory is still 107.0MB. Free memory was 80.6MB in the beginning and 79.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 49.83ms. Allocated memory is still 107.0MB. Free memory was 79.0MB in the beginning and 77.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 476.21ms. Allocated memory is still 107.0MB. Free memory was 77.5MB in the beginning and 65.9MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 141261.01ms. Allocated memory was 107.0MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 65.3MB in the beginning and 851.8MB in the end (delta: -786.4MB). Peak memory consumption was 752.7MB. Max. memory is 16.1GB. * Witness Printer took 3.79ms. Allocated memory is still 1.4GB. Free memory was 851.8MB in the beginning and 850.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 53]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 24. Possible FailurePath: [L31] int x[100]; [L32] int temp; [L33] int ret; [L34] int ret2; [L35] int ret5; [L37] int i = 0; VAL [i=0, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=1, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=2, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=3, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=4, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=5, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=6, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=7, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=8, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=9, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=10, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=11, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=12, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=13, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=14, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=15, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=16, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=17, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=18, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=19, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=20, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=21, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=22, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=23, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=24, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=25, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=26, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=27, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=28, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=29, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=30, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=31, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=32, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=33, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=34, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=35, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=36, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=37, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=38, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=39, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=40, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=41, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=42, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=43, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=44, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=45, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=46, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=47, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=48, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=49, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=50, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=51, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=52, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=53, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=54, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=55, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=56, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=57, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=58, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=59, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=60, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=61, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=62, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=63, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=64, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=65, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=66, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=67, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=68, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=69, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=70, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=71, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=72, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=73, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=74, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=75, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=76, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=77, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=78, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=79, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=80, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=81, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=82, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=83, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=84, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=85, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=86, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=87, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=88, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=89, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=90, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=91, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=92, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=93, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=94, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=95, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=96, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=97, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=98, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=99, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=100, x={9:0}] [L37] COND FALSE !(i < 100) VAL [i=100, x={9:0}] [L41] CALL, EXPR bor(x) VAL [x={9:0}] [L20] int i; [L21] long long res; [L22] EXPR x[0] [L22] res = x[0] [L23] i = 1 VAL [i=1, res=-3, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=2, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=3, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=4, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=5, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=6, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=7, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=8, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=9, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=10, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=11, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=12, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=13, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=14, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=15, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=16, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=17, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=18, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=19, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=20, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=21, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=22, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=23, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=24, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=25, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=26, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=27, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=28, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=29, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=30, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=31, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=32, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=33, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=34, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=35, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=36, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=37, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=38, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=39, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=40, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=41, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=42, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=43, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=44, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=45, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=46, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=47, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=48, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=49, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=50, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=51, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=52, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=53, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=54, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=55, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=56, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=57, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=58, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=59, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=60, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=61, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=62, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=63, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=64, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=65, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=66, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=67, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=68, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=69, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=70, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=71, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=72, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=73, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=74, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=75, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=76, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=77, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=78, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=79, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=80, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=81, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=82, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=83, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=84, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=85, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=86, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=87, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=88, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=89, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=90, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=91, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=92, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=93, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=94, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=95, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=96, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=97, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=98, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=99, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=100, x={9:0}, x={9:0}] [L23] COND FALSE !(i < 100) [L26] return res; [L41] RET, EXPR bor(x) VAL [bor(x)=-63, i=100, x={9:0}] [L41] ret = bor(x) [L43] EXPR x[0] [L43] temp=x[0] [L43] EXPR x[1] [L43] x[0] = x[1] [L43] x[1] = temp VAL [i=100, ret=-63, temp=-3, x={9:0}] [L44] CALL, EXPR bor(x) VAL [x={9:0}] [L20] int i; [L21] long long res; [L22] EXPR x[0] [L22] res = x[0] [L23] i = 1 VAL [i=1, res=-3, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=2, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=3, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=4, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=5, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=6, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=7, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=8, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=9, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=10, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=11, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=12, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=13, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=14, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=15, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=16, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=17, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=18, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=19, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=20, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=21, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=22, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=23, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=24, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=25, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=26, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=27, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=28, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=29, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=30, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=31, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=32, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=33, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=34, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=35, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=36, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=37, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=38, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=39, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=40, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=41, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=42, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=43, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=44, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=45, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=46, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=47, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=48, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=49, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=50, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=51, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=52, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=53, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=54, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=55, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=56, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=57, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=58, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=59, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=60, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=61, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=62, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=63, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=64, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=65, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=66, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=67, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=68, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=69, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=70, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=71, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=72, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=73, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=74, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=75, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=76, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=77, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=78, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=79, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=80, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=81, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=82, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=83, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=84, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=85, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=86, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=87, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=88, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=89, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=90, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=91, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=92, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=93, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=94, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=95, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=96, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=97, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=98, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=99, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=100, x={9:0}, x={9:0}] [L23] COND FALSE !(i < 100) [L26] return res; [L44] RET, EXPR bor(x) VAL [bor(x)=-1, i=100, ret=-63, temp=-3, x={9:0}] [L44] ret2 = bor(x) [L45] EXPR x[0] [L45] temp=x[0] [L46] int i =0 ; VAL [i=0, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=1, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=2, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=3, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=4, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=5, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=6, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=7, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=8, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=9, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=10, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=11, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=12, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=13, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=14, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=15, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=16, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=17, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=18, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=19, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=20, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=21, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=22, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=23, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=24, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=25, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=26, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=27, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=28, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=29, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=30, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=31, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=32, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=33, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=34, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=35, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=36, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=37, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=38, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=39, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=40, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=41, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=42, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=43, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=44, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=45, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=46, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=47, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=48, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=49, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=50, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=51, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=52, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=53, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=54, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=55, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=56, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=57, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=58, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=59, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=60, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=61, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=62, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=63, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=64, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=65, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=66, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=67, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=68, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=69, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=70, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=71, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=72, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=73, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=74, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=75, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=76, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=77, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=78, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=79, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=80, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=81, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=82, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=83, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=84, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=85, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=86, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=87, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=88, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=89, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=90, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=91, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=92, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=93, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=94, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=95, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=96, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=97, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=98, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=99, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND FALSE !(i<100 -1) [L49] x[100 -1] = temp VAL [i=100, i=99, ret=-63, ret2=-1, temp=-3, x={9:0}] [L50] CALL, EXPR bor(x) VAL [x={9:0}] [L20] int i; [L21] long long res; [L22] EXPR x[0] [L22] res = x[0] [L23] i = 1 VAL [i=1, res=-3, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=2, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=3, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=4, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=5, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=6, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=7, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=8, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=9, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=10, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=11, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=12, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=13, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=14, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=15, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=16, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=17, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=18, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=19, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=20, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=21, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=22, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=23, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=24, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=25, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=26, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=27, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=28, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=29, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=30, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=31, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=32, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=33, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=34, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=35, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=36, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=37, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=38, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=39, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=40, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=41, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=42, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=43, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=44, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=45, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=46, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=47, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=48, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=49, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=50, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=51, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=52, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=53, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=54, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=55, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=56, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=57, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=58, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=59, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=60, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=61, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=62, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=63, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=64, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=65, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=66, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=67, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=68, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=69, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=70, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=71, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=72, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=73, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=74, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=75, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=76, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=77, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=78, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=79, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=80, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=81, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=82, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=83, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=84, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=85, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=86, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=87, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=88, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=89, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=90, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=91, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=92, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=93, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=94, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=95, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=96, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=97, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=98, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=99, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=100, x={9:0}, x={9:0}] [L23] COND FALSE !(i < 100) [L26] return res; [L50] RET, EXPR bor(x) VAL [bor(x)=65, i=100, i=99, ret=-63, ret2=-1, temp=-3, x={9:0}] [L50] ret5 = bor(x) [L52] COND TRUE ret != ret2 || ret !=ret5 VAL [i=99, i=100, ret=-63, ret2=-1, ret5=65, temp=-3, x={9:0}] [L53] reach_error() VAL [i=100, i=99, ret=-63, ret2=-1, ret5=65, temp=-3, x={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 140.9s, OverallIterations: 20, TraceHistogramMax: 297, PathProgramHistogramMax: 17, EmptinessCheckTime: 0.1s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 1164 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1257 mSDsCounter, 307 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1525 IncrementalHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 307 mSolverCounterUnsat, 229 mSDtfsCounter, 1525 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9225 GetRequests, 8076 SyntacticMatches, 2 SemanticMatches, 1147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21187 ImplicationChecksByTransitivity, 81.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=313occurred in iteration=19, InterpolantAutomatonStates: 962, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 20.2s SatisfiabilityAnalysisTime, 40.2s InterpolantComputationTime, 6332 NumberOfCodeBlocks, 5668 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 8616 ConstructedInterpolants, 0 QuantifiedInterpolants, 11458 SizeOfPredicates, 0 NumberOfNonLiveVariables, 13008 ConjunctsInSsa, 421 ConjunctsInUnsatCore, 53 InterpolantComputations, 3 PerfectInterpolantSequences, 531682/606421 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-25 19:13:46,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/bor1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7 --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 dc029b09d1398b404e1aee83359480f2bc7a4040f694547fb82d365d81b9786a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:13:49,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:13:49,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:13:49,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:13:49,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:13:49,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:13:49,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:13:49,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:13:49,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:13:49,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:13:49,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:13:49,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:13:49,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:13:49,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:13:49,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:13:49,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:13:49,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:13:49,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:13:49,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:13:49,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:13:49,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:13:49,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:13:49,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:13:49,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:13:49,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:13:49,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:13:49,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:13:49,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:13:49,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:13:49,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:13:49,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:13:49,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:13:49,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:13:49,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:13:49,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:13:49,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:13:49,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:13:49,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:13:49,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:13:49,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:13:49,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:13:49,415 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 19:13:49,454 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:13:49,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:13:49,455 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:13:49,455 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:13:49,456 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:13:49,456 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:13:49,456 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:13:49,457 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:13:49,457 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:13:49,458 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:13:49,458 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:13:49,459 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:13:49,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:13:49,460 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:13:49,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:13:49,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:13:49,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:13:49,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:13:49,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:13:49,462 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:13:49,462 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 19:13:49,462 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 19:13:49,462 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:13:49,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:13:49,463 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:13:49,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:13:49,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:13:49,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 19:13:49,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:13:49,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:13:49,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:13:49,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:13:49,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:13:49,465 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 19:13:49,465 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 19:13:49,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:13:49,466 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:13:49,466 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:13:49,466 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc029b09d1398b404e1aee83359480f2bc7a4040f694547fb82d365d81b9786a [2021-11-25 19:13:49,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:13:49,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:13:49,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:13:49,841 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:13:49,842 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:13:49,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/array-crafted/bor1.i [2021-11-25 19:13:49,916 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/data/dd07f5df0/7906c69ac56f4d89b3da01daaa75091d/FLAG6a5cb7407 [2021-11-25 19:13:50,467 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:13:50,468 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/sv-benchmarks/c/array-crafted/bor1.i [2021-11-25 19:13:50,475 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/data/dd07f5df0/7906c69ac56f4d89b3da01daaa75091d/FLAG6a5cb7407 [2021-11-25 19:13:50,818 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/data/dd07f5df0/7906c69ac56f4d89b3da01daaa75091d [2021-11-25 19:13:50,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:13:50,821 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:13:50,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:13:50,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:13:50,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:13:50,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:13:50" (1/1) ... [2021-11-25 19:13:50,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72ffbf61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:50, skipping insertion in model container [2021-11-25 19:13:50,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:13:50" (1/1) ... [2021-11-25 19:13:50,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:13:50,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:13:51,073 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/sv-benchmarks/c/array-crafted/bor1.i[1285,1298] [2021-11-25 19:13:51,076 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:13:51,088 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:13:51,133 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/sv-benchmarks/c/array-crafted/bor1.i[1285,1298] [2021-11-25 19:13:51,138 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:13:51,154 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:13:51,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:51 WrapperNode [2021-11-25 19:13:51,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:13:51,156 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:13:51,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:13:51,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:13:51,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:51" (1/1) ... [2021-11-25 19:13:51,182 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:51" (1/1) ... [2021-11-25 19:13:51,210 INFO L137 Inliner]: procedures = 18, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 70 [2021-11-25 19:13:51,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:13:51,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:13:51,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:13:51,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:13:51,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:51" (1/1) ... [2021-11-25 19:13:51,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:51" (1/1) ... [2021-11-25 19:13:51,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:51" (1/1) ... [2021-11-25 19:13:51,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:51" (1/1) ... [2021-11-25 19:13:51,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:51" (1/1) ... [2021-11-25 19:13:51,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:51" (1/1) ... [2021-11-25 19:13:51,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:51" (1/1) ... [2021-11-25 19:13:51,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:13:51,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:13:51,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:13:51,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:13:51,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:51" (1/1) ... [2021-11-25 19:13:51,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:13:51,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:13:51,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:13:51,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:13:51,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:13:51,366 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2021-11-25 19:13:51,367 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2021-11-25 19:13:51,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 19:13:51,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:13:51,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 19:13:51,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:13:51,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:13:51,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:13:51,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 19:13:51,479 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:13:51,481 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:13:51,675 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:13:51,681 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:13:51,681 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 19:13:51,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:13:51 BoogieIcfgContainer [2021-11-25 19:13:51,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:13:51,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:13:51,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:13:51,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:13:51,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:13:50" (1/3) ... [2021-11-25 19:13:51,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a8e34d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:13:51, skipping insertion in model container [2021-11-25 19:13:51,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:51" (2/3) ... [2021-11-25 19:13:51,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a8e34d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:13:51, skipping insertion in model container [2021-11-25 19:13:51,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:13:51" (3/3) ... [2021-11-25 19:13:51,690 INFO L111 eAbstractionObserver]: Analyzing ICFG bor1.i [2021-11-25 19:13:51,695 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:13:51,696 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:13:51,739 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:13:51,745 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:13:51,746 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:13:51,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 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) [2021-11-25 19:13:51,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 19:13:51,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:51,767 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:51,767 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:51,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:51,773 INFO L85 PathProgramCache]: Analyzing trace with hash -2001158789, now seen corresponding path program 1 times [2021-11-25 19:13:51,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:51,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691030211] [2021-11-25 19:13:51,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:51,796 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:51,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:51,800 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:51,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 19:13:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:51,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:13:51,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:52,112 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 19:13:52,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:13:52,114 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:52,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691030211] [2021-11-25 19:13:52,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691030211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:52,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:52,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:13:52,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946023728] [2021-11-25 19:13:52,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:52,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:13:52,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:13:52,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:13:52,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:13:52,151 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 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 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-11-25 19:13:52,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:52,183 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2021-11-25 19:13:52,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:13:52,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 28 [2021-11-25 19:13:52,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:52,193 INFO L225 Difference]: With dead ends: 50 [2021-11-25 19:13:52,193 INFO L226 Difference]: Without dead ends: 24 [2021-11-25 19:13:52,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:13:52,200 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:52,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:13:52,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-25 19:13:52,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-11-25 19:13:52,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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) [2021-11-25 19:13:52,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-11-25 19:13:52,238 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 28 [2021-11-25 19:13:52,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:52,239 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-11-25 19:13:52,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-11-25 19:13:52,240 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-11-25 19:13:52,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 19:13:52,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:52,242 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:52,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:52,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:13:52,460 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:52,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:52,461 INFO L85 PathProgramCache]: Analyzing trace with hash 202333565, now seen corresponding path program 1 times [2021-11-25 19:13:52,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:52,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011915382] [2021-11-25 19:13:52,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:52,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:52,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:52,466 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:52,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 19:13:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:52,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:13:52,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:52,664 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 19:13:52,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:52,802 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 19:13:52,810 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:52,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011915382] [2021-11-25 19:13:52,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011915382] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:52,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [212943143] [2021-11-25 19:13:52,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:52,812 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:13:52,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:13:52,847 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:13:52,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-25 19:13:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:52,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:13:52,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:53,053 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 19:13:53,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:53,117 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 19:13:53,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [212943143] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:53,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421024286] [2021-11-25 19:13:53,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:53,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:53,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:13:53,120 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:13:53,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:13:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:53,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:13:53,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:53,246 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:13:53,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:13:53,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421024286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:53,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2021-11-25 19:13:53,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4, 4, 4] total 7 [2021-11-25 19:13:53,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934489063] [2021-11-25 19:13:53,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:53,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:13:53,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:13:53,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:13:53,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:13:53,251 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-11-25 19:13:53,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:53,265 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2021-11-25 19:13:53,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:13:53,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 30 [2021-11-25 19:13:53,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:53,267 INFO L225 Difference]: With dead ends: 42 [2021-11-25 19:13:53,267 INFO L226 Difference]: Without dead ends: 25 [2021-11-25 19:13:53,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:13:53,269 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:53,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:13:53,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-25 19:13:53,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-11-25 19:13:53,275 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) [2021-11-25 19:13:53,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-11-25 19:13:53,276 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 30 [2021-11-25 19:13:53,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:53,277 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-11-25 19:13:53,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-11-25 19:13:53,277 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-11-25 19:13:53,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 19:13:53,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:53,279 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:53,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:53,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:53,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:53,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:53,884 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:53,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:53,885 INFO L85 PathProgramCache]: Analyzing trace with hash -796008709, now seen corresponding path program 1 times [2021-11-25 19:13:53,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:53,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49046425] [2021-11-25 19:13:53,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:53,887 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:53,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:53,888 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:53,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-25 19:13:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:53,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:13:53,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:54,041 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 19:13:54,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:54,141 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 19:13:54,141 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:54,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49046425] [2021-11-25 19:13:54,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49046425] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:54,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [761251601] [2021-11-25 19:13:54,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:54,143 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:13:54,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:13:54,146 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:13:54,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-25 19:13:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:54,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:13:54,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 19:13:54,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:54,413 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 19:13:54,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [761251601] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:54,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593271629] [2021-11-25 19:13:54,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:54,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:54,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:13:54,416 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:13:54,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 19:13:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:54,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:13:54,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:54,563 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:13:54,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:13:54,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593271629] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:54,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2021-11-25 19:13:54,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4, 4, 4] total 7 [2021-11-25 19:13:54,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790402660] [2021-11-25 19:13:54,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:54,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:13:54,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:13:54,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:13:54,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:13:54,566 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-11-25 19:13:54,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:54,600 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2021-11-25 19:13:54,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:13:54,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 36 [2021-11-25 19:13:54,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:54,603 INFO L225 Difference]: With dead ends: 39 [2021-11-25 19:13:54,603 INFO L226 Difference]: Without dead ends: 26 [2021-11-25 19:13:54,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:13:54,608 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:54,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 45 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:13:54,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-25 19:13:54,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-11-25 19:13:54,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 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) [2021-11-25 19:13:54,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-11-25 19:13:54,613 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 36 [2021-11-25 19:13:54,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:54,615 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-11-25 19:13:54,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-11-25 19:13:54,615 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-11-25 19:13:54,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 19:13:54,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:54,617 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:54,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:54,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:55,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:55,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:13:55,229 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:55,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:55,230 INFO L85 PathProgramCache]: Analyzing trace with hash 165229081, now seen corresponding path program 1 times [2021-11-25 19:13:55,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:55,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395436907] [2021-11-25 19:13:55,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:55,231 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:55,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:55,233 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:55,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-25 19:13:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:55,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:13:55,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:55,421 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-25 19:13:55,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:55,490 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-25 19:13:55,491 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:55,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395436907] [2021-11-25 19:13:55,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395436907] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:55,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [345556457] [2021-11-25 19:13:55,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:55,493 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:13:55,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:13:55,494 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:13:55,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-25 19:13:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:55,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:13:55,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:55,702 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-25 19:13:55,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:55,761 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-25 19:13:55,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [345556457] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:55,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499848791] [2021-11-25 19:13:55,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:55,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:55,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:13:55,763 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:13:55,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 19:13:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:55,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:13:55,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:55,938 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:13:55,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:56,027 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-25 19:13:56,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499848791] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:56,027 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:13:56,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 10 [2021-11-25 19:13:56,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114540520] [2021-11-25 19:13:56,036 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:13:56,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 19:13:56,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:13:56,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 19:13:56,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:13:56,041 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 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) [2021-11-25 19:13:56,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:56,197 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2021-11-25 19:13:56,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 19:13:56,201 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 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 38 [2021-11-25 19:13:56,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:56,202 INFO L225 Difference]: With dead ends: 57 [2021-11-25 19:13:56,202 INFO L226 Difference]: Without dead ends: 37 [2021-11-25 19:13:56,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:13:56,203 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:56,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 158 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:13:56,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-25 19:13:56,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-11-25 19:13:56,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 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) [2021-11-25 19:13:56,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-11-25 19:13:56,214 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 38 [2021-11-25 19:13:56,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:56,215 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-11-25 19:13:56,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 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) [2021-11-25 19:13:56,215 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-11-25 19:13:56,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-25 19:13:56,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:56,220 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:56,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:56,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:56,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:56,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:13:56,835 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:56,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:56,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1097918215, now seen corresponding path program 2 times [2021-11-25 19:13:56,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:56,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623024219] [2021-11-25 19:13:56,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:13:56,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:56,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:56,837 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:56,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-25 19:13:56,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:13:56,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:13:56,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:13:56,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:57,049 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-25 19:13:57,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:57,250 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-25 19:13:57,250 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:57,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623024219] [2021-11-25 19:13:57,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623024219] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:57,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2086897127] [2021-11-25 19:13:57,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:13:57,251 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:13:57,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:13:57,255 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:13:57,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-25 19:13:57,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:13:57,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:13:57,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:13:57,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:57,505 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-25 19:13:57,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:57,591 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-25 19:13:57,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2086897127] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:57,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900721490] [2021-11-25 19:13:57,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:13:57,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:57,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:13:57,593 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:13:57,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-25 19:13:57,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:13:57,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:13:57,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:13:57,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:57,804 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-25 19:13:57,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:57,942 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-25 19:13:57,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900721490] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:57,943 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:13:57,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 4, 4] total 16 [2021-11-25 19:13:57,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441571793] [2021-11-25 19:13:57,943 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:13:57,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 19:13:57,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:13:57,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 19:13:57,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-11-25 19:13:57,945 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 19:13:58,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:58,287 INFO L93 Difference]: Finished difference Result 81 states and 100 transitions. [2021-11-25 19:13:58,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 19:13:58,288 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 50 [2021-11-25 19:13:58,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:58,289 INFO L225 Difference]: With dead ends: 81 [2021-11-25 19:13:58,289 INFO L226 Difference]: Without dead ends: 55 [2021-11-25 19:13:58,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-11-25 19:13:58,291 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:58,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 162 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:13:58,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-25 19:13:58,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-11-25 19:13:58,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 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) [2021-11-25 19:13:58,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-11-25 19:13:58,301 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 50 [2021-11-25 19:13:58,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:58,301 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-11-25 19:13:58,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 19:13:58,302 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-11-25 19:13:58,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 19:13:58,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:58,303 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:58,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:58,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:58,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:58,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:58,915 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:58,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:58,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1344928639, now seen corresponding path program 3 times [2021-11-25 19:13:58,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:58,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299005565] [2021-11-25 19:13:58,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:13:58,916 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:58,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:58,921 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:58,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-25 19:13:59,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 19:13:59,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:13:59,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:13:59,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:59,220 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-25 19:13:59,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:59,429 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-25 19:13:59,429 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:59,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299005565] [2021-11-25 19:13:59,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299005565] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:59,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1302586910] [2021-11-25 19:13:59,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:13:59,430 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:13:59,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:13:59,431 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:13:59,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-25 19:13:59,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 19:13:59,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:13:59,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:13:59,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:59,820 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-25 19:13:59,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:59,951 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-25 19:13:59,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1302586910] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:59,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651027309] [2021-11-25 19:13:59,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:13:59,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:59,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:13:59,953 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:13:59,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-25 19:14:00,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 19:14:00,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:14:00,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:14:00,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:00,286 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-25 19:14:00,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:00,598 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-25 19:14:00,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651027309] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:00,598 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:14:00,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 8] total 16 [2021-11-25 19:14:00,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590579097] [2021-11-25 19:14:00,599 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:14:00,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 19:14:00,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:00,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 19:14:00,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-11-25 19:14:00,601 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-25 19:14:00,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:00,997 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2021-11-25 19:14:00,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 19:14:00,998 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 80 [2021-11-25 19:14:00,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:01,000 INFO L225 Difference]: With dead ends: 98 [2021-11-25 19:14:01,000 INFO L226 Difference]: Without dead ends: 67 [2021-11-25 19:14:01,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=155, Invalid=265, Unknown=0, NotChecked=0, Total=420 [2021-11-25 19:14:01,002 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 26 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:01,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 176 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:14:01,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-25 19:14:01,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-11-25 19:14:01,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 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) [2021-11-25 19:14:01,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2021-11-25 19:14:01,017 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 80 [2021-11-25 19:14:01,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:01,018 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2021-11-25 19:14:01,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-25 19:14:01,018 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2021-11-25 19:14:01,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-25 19:14:01,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:01,021 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:01,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:01,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:01,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:01,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:14:01,632 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:14:01,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:01,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1960837619, now seen corresponding path program 4 times [2021-11-25 19:14:01,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:01,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461171608] [2021-11-25 19:14:01,633 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:14:01,633 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:01,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:01,635 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:01,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-25 19:14:01,815 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:14:01,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:14:01,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:14:01,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:02,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 991 trivial. 0 not checked. [2021-11-25 19:14:02,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:02,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 991 trivial. 0 not checked. [2021-11-25 19:14:02,642 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:02,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461171608] [2021-11-25 19:14:02,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461171608] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:02,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1008771871] [2021-11-25 19:14:02,643 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:14:02,643 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:02,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:14:02,647 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:14:02,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-25 19:14:02,974 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:14:02,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:14:02,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:14:02,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:03,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 991 trivial. 0 not checked. [2021-11-25 19:14:03,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:03,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 991 trivial. 0 not checked. [2021-11-25 19:14:03,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1008771871] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:03,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187128120] [2021-11-25 19:14:03,469 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:14:03,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:14:03,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:14:03,479 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:14:03,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-25 19:14:03,656 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:14:03,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:14:03,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 19:14:03,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:04,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 444 proven. 100 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2021-11-25 19:14:04,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:05,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 0 proven. 548 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2021-11-25 19:14:05,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187128120] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:05,552 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:14:05,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 13, 14] total 47 [2021-11-25 19:14:05,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370433050] [2021-11-25 19:14:05,553 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:14:05,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-25 19:14:05,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:05,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-25 19:14:05,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1817, Unknown=0, NotChecked=0, Total=2162 [2021-11-25 19:14:05,556 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 47 states, 47 states have (on average 2.425531914893617) internal successors, (114), 47 states have internal predecessors, (114), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 19:14:09,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:09,644 INFO L93 Difference]: Finished difference Result 159 states and 193 transitions. [2021-11-25 19:14:09,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-25 19:14:09,645 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.425531914893617) internal successors, (114), 47 states have internal predecessors, (114), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 116 [2021-11-25 19:14:09,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:09,646 INFO L225 Difference]: With dead ends: 159 [2021-11-25 19:14:09,647 INFO L226 Difference]: Without dead ends: 115 [2021-11-25 19:14:09,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 645 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=859, Invalid=3697, Unknown=0, NotChecked=0, Total=4556 [2021-11-25 19:14:09,651 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 86 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:09,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 596 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 19:14:09,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-25 19:14:09,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-11-25 19:14:09,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.0272727272727273) internal successors, (113), 110 states have internal predecessors, (113), 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) [2021-11-25 19:14:09,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2021-11-25 19:14:09,664 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 116 [2021-11-25 19:14:09,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:09,664 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2021-11-25 19:14:09,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.425531914893617) internal successors, (114), 47 states have internal predecessors, (114), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 19:14:09,665 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2021-11-25 19:14:09,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-25 19:14:09,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:09,669 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 22, 22, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:09,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:09,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:10,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-11-25 19:14:10,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:14:10,272 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:14:10,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:10,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1632264205, now seen corresponding path program 5 times [2021-11-25 19:14:10,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:10,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97404729] [2021-11-25 19:14:10,274 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-25 19:14:10,274 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:10,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:10,275 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:10,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-25 19:14:11,895 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2021-11-25 19:14:11,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:14:11,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-25 19:14:11,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:12,505 INFO L134 CoverageAnalysis]: Checked inductivity of 5003 backedges. 2028 proven. 484 refuted. 0 times theorem prover too weak. 2491 trivial. 0 not checked. [2021-11-25 19:14:12,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:14,985 INFO L134 CoverageAnalysis]: Checked inductivity of 5003 backedges. 0 proven. 2516 refuted. 0 times theorem prover too weak. 2487 trivial. 0 not checked. [2021-11-25 19:14:14,985 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:14,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97404729] [2021-11-25 19:14:14,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [97404729] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:14,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1713654693] [2021-11-25 19:14:14,986 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-25 19:14:14,986 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:14,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:14:14,991 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:14:15,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8f445c-4f62-4c41-9700-54436c67af4d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process