./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/xor1.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_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/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_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/xor1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/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_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/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 fa90627ffc045ef90595d49d60ca0f6095b53b667a9d0f028eb93e7bf4c6c579 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:40:17,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:40:17,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:40:17,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:40:17,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:40:17,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:40:17,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:40:17,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:40:17,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:40:17,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:40:17,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:40:17,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:40:17,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:40:17,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:40:17,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:40:17,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:40:17,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:40:17,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:40:17,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:40:17,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:40:17,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:40:17,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:40:17,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:40:17,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:40:17,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:40:17,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:40:17,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:40:17,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:40:17,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:40:17,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:40:17,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:40:17,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:40:17,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:40:17,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:40:17,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:40:17,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:40:17,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:40:17,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:40:17,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:40:17,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:40:17,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:40:17,867 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 20:40:17,907 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:40:17,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:40:17,908 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:40:17,909 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:40:17,910 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:40:17,910 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:40:17,910 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:40:17,910 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:40:17,911 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:40:17,911 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:40:17,912 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:40:17,912 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:40:17,913 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:40:17,913 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:40:17,913 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:40:17,913 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:40:17,914 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:40:17,914 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:40:17,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:40:17,915 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:40:17,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:40:17,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:40:17,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:40:17,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:40:17,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:40:17,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:40:17,916 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:40:17,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:40:17,917 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:40:17,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:40:17,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:40:17,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:40:17,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:40:17,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:40:17,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:40:17,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:40:17,919 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:40:17,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:40:17,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:40:17,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:40:17,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:40:17,920 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_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa90627ffc045ef90595d49d60ca0f6095b53b667a9d0f028eb93e7bf4c6c579 [2021-11-25 20:40:18,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:40:18,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:40:18,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:40:18,293 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:40:18,294 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:40:18,295 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/array-crafted/xor1.i [2021-11-25 20:40:18,378 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/data/3a488a257/6362c27decdd45f48d6579fe951db3b4/FLAG9a3c71f61 [2021-11-25 20:40:18,798 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:40:18,799 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/sv-benchmarks/c/array-crafted/xor1.i [2021-11-25 20:40:18,806 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/data/3a488a257/6362c27decdd45f48d6579fe951db3b4/FLAG9a3c71f61 [2021-11-25 20:40:19,192 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/data/3a488a257/6362c27decdd45f48d6579fe951db3b4 [2021-11-25 20:40:19,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:40:19,196 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:40:19,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:40:19,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:40:19,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:40:19,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:40:19" (1/1) ... [2021-11-25 20:40:19,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f90d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:40:19, skipping insertion in model container [2021-11-25 20:40:19,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:40:19" (1/1) ... [2021-11-25 20:40:19,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:40:19,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:40:19,434 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_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/sv-benchmarks/c/array-crafted/xor1.i[1285,1298] [2021-11-25 20:40:19,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:40:19,446 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:40:19,490 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_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/sv-benchmarks/c/array-crafted/xor1.i[1285,1298] [2021-11-25 20:40:19,493 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:40:19,512 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:40:19,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:40:19 WrapperNode [2021-11-25 20:40:19,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:40:19,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:40:19,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:40:19,514 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:40:19,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:40:19" (1/1) ... [2021-11-25 20:40:19,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:40:19" (1/1) ... [2021-11-25 20:40:19,567 INFO L137 Inliner]: procedures = 16, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 74 [2021-11-25 20:40:19,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:40:19,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:40:19,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:40:19,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:40:19,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:40:19" (1/1) ... [2021-11-25 20:40:19,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:40:19" (1/1) ... [2021-11-25 20:40:19,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:40:19" (1/1) ... [2021-11-25 20:40:19,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:40:19" (1/1) ... [2021-11-25 20:40:19,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:40:19" (1/1) ... [2021-11-25 20:40:19,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:40:19" (1/1) ... [2021-11-25 20:40:19,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:40:19" (1/1) ... [2021-11-25 20:40:19,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:40:19,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:40:19,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:40:19,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:40:19,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:40:19" (1/1) ... [2021-11-25 20:40:19,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:40:19,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:40:19,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:40:19,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:40:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:40:19,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:40:19,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:40:19,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:40:19,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:40:19,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:40:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:40:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2021-11-25 20:40:19,704 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2021-11-25 20:40:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:40:19,766 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:40:19,767 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:40:19,909 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:40:19,936 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:40:19,937 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 20:40:19,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:40:19 BoogieIcfgContainer [2021-11-25 20:40:19,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:40:19,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:40:19,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:40:19,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:40:19,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:40:19" (1/3) ... [2021-11-25 20:40:19,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@670edda4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:40:19, skipping insertion in model container [2021-11-25 20:40:19,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:40:19" (2/3) ... [2021-11-25 20:40:19,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@670edda4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:40:19, skipping insertion in model container [2021-11-25 20:40:19,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:40:19" (3/3) ... [2021-11-25 20:40:19,956 INFO L111 eAbstractionObserver]: Analyzing ICFG xor1.i [2021-11-25 20:40:19,961 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:40:19,961 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:40:20,004 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:40:20,011 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 20:40:20,011 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:40:20,043 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 20:40:20,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-25 20:40:20,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:40:20,049 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:40:20,049 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:40:20,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:40:20,055 INFO L85 PathProgramCache]: Analyzing trace with hash 597464896, now seen corresponding path program 1 times [2021-11-25 20:40:20,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:40:20,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021938560] [2021-11-25 20:40:20,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:20,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:40:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:20,339 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 20:40:20,355 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:40:20,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021938560] [2021-11-25 20:40:20,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021938560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:40:20,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:40:20,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:40:20,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097318492] [2021-11-25 20:40:20,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:40:20,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:40:20,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:40:20,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:40:20,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:40:20,394 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 20:40:20,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:40:20,435 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2021-11-25 20:40:20,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:40:20,438 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 20:40:20,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:40:20,446 INFO L225 Difference]: With dead ends: 33 [2021-11-25 20:40:20,449 INFO L226 Difference]: Without dead ends: 16 [2021-11-25 20:40:20,452 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 20:40:20,468 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 20:40:20,470 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 20:40:20,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-25 20:40:20,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-25 20:40:20,503 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 20:40:20,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-11-25 20:40:20,505 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 20 [2021-11-25 20:40:20,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:40:20,506 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-11-25 20:40:20,506 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 20:40:20,506 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-11-25 20:40:20,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 20:40:20,508 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:40:20,508 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 20:40:20,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:40:20,509 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:40:20,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:40:20,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1498069992, now seen corresponding path program 1 times [2021-11-25 20:40:20,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:40:20,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420149802] [2021-11-25 20:40:20,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:20,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:40:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:20,568 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 20:40:20,569 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:40:20,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420149802] [2021-11-25 20:40:20,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420149802] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:40:20,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808336550] [2021-11-25 20:40:20,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:20,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:20,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:40:20,572 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:40:20,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:40:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:20,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:40:20,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:40:20,797 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 20:40:20,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:40:20,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808336550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:40:20,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:40:20,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 20:40:20,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891090335] [2021-11-25 20:40:20,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:40:20,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:40:20,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:40:20,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:40:20,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:40:20,813 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 20:40:20,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:40:20,832 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2021-11-25 20:40:20,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:40:20,832 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 20:40:20,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:40:20,833 INFO L225 Difference]: With dead ends: 29 [2021-11-25 20:40:20,833 INFO L226 Difference]: Without dead ends: 17 [2021-11-25 20:40:20,852 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 20:40:20,854 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 20:40:20,855 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 20:40:20,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-25 20:40:20,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-25 20:40:20,860 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 20:40:20,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-11-25 20:40:20,861 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 21 [2021-11-25 20:40:20,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:40:20,862 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-11-25 20:40:20,862 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 20:40:20,862 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-11-25 20:40:20,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 20:40:20,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:40:20,864 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 20:40:20,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:40:21,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:21,079 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:40:21,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:40:21,080 INFO L85 PathProgramCache]: Analyzing trace with hash 310367812, now seen corresponding path program 1 times [2021-11-25 20:40:21,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:40:21,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711284910] [2021-11-25 20:40:21,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:21,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:40:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:21,154 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 20:40:21,155 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:40:21,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711284910] [2021-11-25 20:40:21,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711284910] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:40:21,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613583694] [2021-11-25 20:40:21,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:21,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:21,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:40:21,162 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:40:21,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:40:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:21,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:40:21,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:40:21,352 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 20:40:21,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:40:21,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613583694] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:40:21,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:40:21,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 20:40:21,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438269366] [2021-11-25 20:40:21,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:40:21,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:40:21,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:40:21,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:40:21,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:40:21,357 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 20:40:21,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:40:21,383 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2021-11-25 20:40:21,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:40:21,384 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 20:40:21,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:40:21,385 INFO L225 Difference]: With dead ends: 27 [2021-11-25 20:40:21,385 INFO L226 Difference]: Without dead ends: 18 [2021-11-25 20:40:21,386 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 20:40:21,390 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 20:40:21,392 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 20:40:21,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-25 20:40:21,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-25 20:40:21,401 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 20:40:21,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2021-11-25 20:40:21,404 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 24 [2021-11-25 20:40:21,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:40:21,406 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-11-25 20:40:21,406 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 20:40:21,406 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2021-11-25 20:40:21,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 20:40:21,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:40:21,408 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 20:40:21,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:40:21,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:21,612 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:40:21,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:40:21,617 INFO L85 PathProgramCache]: Analyzing trace with hash 220283989, now seen corresponding path program 1 times [2021-11-25 20:40:21,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:40:21,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573608216] [2021-11-25 20:40:21,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:21,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:40:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:21,711 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 20:40:21,711 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:40:21,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573608216] [2021-11-25 20:40:21,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573608216] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:40:21,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120957937] [2021-11-25 20:40:21,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:21,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:21,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:40:21,723 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:40:21,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:40:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:21,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:40:21,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:40:21,873 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 20:40:21,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:40:21,937 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 20:40:21,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120957937] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:40:21,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [727402377] [2021-11-25 20:40:21,960 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:40:21,961 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:40:21,970 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:40:21,976 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:40:21,977 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:40:22,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:22,096 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:40:22,097 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 20:40:22,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:22,116 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 20:40:22,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:22,168 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 20:40:22,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:22,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:22,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:22,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:22,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:22,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:40:22,351 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-25 20:40:22,352 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 20:40:22,580 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 20:40:22,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:22,681 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 20:40:22,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:22,851 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 20:40:22,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:22,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:22,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:22,935 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-25 20:40:22,936 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 20:40:23,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:23,005 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 20:40:23,018 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 20:40:23,224 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2021-11-25 20:40:23,262 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:40:30,207 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) (<= 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 20:40:30,207 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:40:30,207 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:40:30,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2021-11-25 20:40:30,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402646463] [2021-11-25 20:40:30,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:40:30,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 20:40:30,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:40:30,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 20:40:30,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=299, Unknown=1, NotChecked=0, Total=380 [2021-11-25 20:40:30,209 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 20:40:30,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:40:30,255 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2021-11-25 20:40:30,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:40:30,255 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 20:40:30,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:40:30,256 INFO L225 Difference]: With dead ends: 36 [2021-11-25 20:40:30,256 INFO L226 Difference]: Without dead ends: 21 [2021-11-25 20:40:30,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=80, Invalid=299, Unknown=1, NotChecked=0, Total=380 [2021-11-25 20:40:30,258 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 20:40:30,258 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 20:40:30,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-25 20:40:30,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-25 20:40:30,262 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 20:40:30,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-11-25 20:40:30,264 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2021-11-25 20:40:30,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:40:30,264 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-11-25 20:40:30,264 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 20:40:30,265 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-11-25 20:40:30,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 20:40:30,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:40:30,276 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 20:40:30,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:40:30,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:30,500 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:40:30,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:40:30,500 INFO L85 PathProgramCache]: Analyzing trace with hash 345546157, now seen corresponding path program 2 times [2021-11-25 20:40:30,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:40:30,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66625844] [2021-11-25 20:40:30,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:30,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:40:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:30,587 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 20:40:30,588 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:40:30,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66625844] [2021-11-25 20:40:30,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66625844] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:40:30,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071158608] [2021-11-25 20:40:30,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:40:30,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:30,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:40:30,592 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:40:30,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 20:40:30,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 20:40:30,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:40:30,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:40:30,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:40:30,757 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 20:40:30,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:40:30,821 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 20:40:30,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071158608] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:40:30,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2041383891] [2021-11-25 20:40:30,827 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:40:30,827 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:40:30,828 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:40:30,828 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:40:30,828 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:40:30,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:30,871 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 20:40:30,871 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 20:40:30,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:30,904 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:40:30,904 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 20:40:30,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:30,941 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 20:40:31,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,090 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-25 20:40:31,091 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 20:40:31,156 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 20:40:31,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,235 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 20:40:31,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:40:31,372 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 20:40:31,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,431 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 20:40:31,432 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 20:40:31,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,467 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 20:40:31,481 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 20:40:31,646 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2021-11-25 20:40:31,688 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:40:36,560 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '797#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_xor_~res~0_BEFORE_RETURN_11 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_xor_~res~0_BEFORE_RETURN_11 4294967296) 2147483647) (mod v_xor_~res~0_BEFORE_RETURN_11 4294967296) (+ (mod v_xor_~res~0_BEFORE_RETURN_11 4294967296) (- 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 20:40:36,560 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:40:36,561 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:40:36,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-25 20:40:36,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755358408] [2021-11-25 20:40:36,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:40:36,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 20:40:36,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:40:36,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 20:40:36,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-11-25 20:40:36,563 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 20:40:36,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:40:36,605 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2021-11-25 20:40:36,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:40:36,605 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 20:40:36,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:40:36,606 INFO L225 Difference]: With dead ends: 38 [2021-11-25 20:40:36,606 INFO L226 Difference]: Without dead ends: 24 [2021-11-25 20:40:36,607 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 20:40:36,608 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 20:40:36,608 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 20:40:36,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-25 20:40:36,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-25 20:40:36,613 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 20:40:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-11-25 20:40:36,614 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 28 [2021-11-25 20:40:36,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:40:36,614 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-11-25 20:40:36,615 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 20:40:36,615 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-11-25 20:40:36,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-25 20:40:36,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:40:36,616 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 20:40:36,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 20:40:36,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:36,832 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:40:36,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:40:36,833 INFO L85 PathProgramCache]: Analyzing trace with hash 2109256435, now seen corresponding path program 3 times [2021-11-25 20:40:36,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:40:36,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637130163] [2021-11-25 20:40:36,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:36,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:40:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:36,946 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 20:40:36,947 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:40:36,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637130163] [2021-11-25 20:40:36,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637130163] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:40:36,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693964576] [2021-11-25 20:40:36,947 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 20:40:36,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:36,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:40:36,948 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:40:36,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 20:40:37,037 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 20:40:37,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:40:37,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 20:40:37,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:40:37,147 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 20:40:37,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:40:37,281 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 20:40:37,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693964576] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:40:37,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1961131402] [2021-11-25 20:40:37,286 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:40:37,286 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:40:37,287 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:40:37,287 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:40:37,287 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:40:37,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:37,331 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 20:40:37,331 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 20:40:37,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:37,357 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:40:37,358 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 20:40:37,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:37,389 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 20:40:37,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:37,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:37,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:37,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:37,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:37,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:40:37,518 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-25 20:40:37,519 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 20:40:37,653 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 20:40:37,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:37,717 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 20:40:37,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:37,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:37,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:40:37,835 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 20:40:37,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:37,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:37,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:37,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:37,877 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 20:40:37,877 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 20:40:37,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:37,904 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 20:40:37,916 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 20:40:38,076 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2021-11-25 20:40:38,105 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:40:43,001 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1141#(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) (<= 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|) (exists ((v_xor_~res~0_BEFORE_RETURN_18 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_xor_~res~0_BEFORE_RETURN_18 4294967296) 2147483647) (mod v_xor_~res~0_BEFORE_RETURN_18 4294967296) (+ (- 4294967296) (mod v_xor_~res~0_BEFORE_RETURN_18 4294967296))))) (<= |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 20:40:43,001 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:40:43,001 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:40:43,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2021-11-25 20:40:43,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245376452] [2021-11-25 20:40:43,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:40:43,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 20:40:43,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:40:43,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 20:40:43,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2021-11-25 20:40:43,004 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 20:40:43,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:40:43,057 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2021-11-25 20:40:43,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:40:43,061 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 20:40:43,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:40:43,062 INFO L225 Difference]: With dead ends: 49 [2021-11-25 20:40:43,062 INFO L226 Difference]: Without dead ends: 31 [2021-11-25 20:40:43,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2021-11-25 20:40:43,064 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, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:40:43,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:40:43,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-25 20:40:43,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-25 20:40:43,070 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 20:40:43,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-11-25 20:40:43,071 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2021-11-25 20:40:43,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:40:43,071 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-11-25 20:40:43,071 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 20:40:43,072 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-11-25 20:40:43,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-25 20:40:43,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:40:43,073 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 20:40:43,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 20:40:43,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-25 20:40:43,276 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:40:43,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:40:43,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1691335776, now seen corresponding path program 4 times [2021-11-25 20:40:43,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:40:43,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932992156] [2021-11-25 20:40:43,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:43,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:40:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:43,442 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 20:40:43,443 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:40:43,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932992156] [2021-11-25 20:40:43,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932992156] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:40:43,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229014996] [2021-11-25 20:40:43,443 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 20:40:43,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:43,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:40:43,445 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:40:43,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 20:40:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:43,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 20:40:43,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:40:43,644 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 20:40:43,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:40:43,911 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 20:40:43,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229014996] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:40:43,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [968093739] [2021-11-25 20:40:43,914 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:40:43,914 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:40:43,915 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:40:43,915 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:40:43,915 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:40:43,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:43,949 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:40:43,950 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 20:40:43,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:43,961 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 20:40:43,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:43,996 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 20:40:44,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:44,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:44,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:44,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:44,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:44,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:44,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:44,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:44,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:44,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:44,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:44,116 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-25 20:40:44,116 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 20:40:44,176 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 20:40:44,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:44,251 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 20:40:44,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:44,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:44,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:40:44,385 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 20:40:44,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:44,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:44,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:44,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:44,434 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 20:40:44,434 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 20:40:44,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:44,462 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 20:40:44,479 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 20:40:44,639 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2021-11-25 20:40:44,674 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:40:47,637 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1574#(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_xor_~res~0_BEFORE_RETURN_23 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_xor_~res~0_BEFORE_RETURN_23 4294967296) 2147483647) (mod v_xor_~res~0_BEFORE_RETURN_23 4294967296) (+ (mod v_xor_~res~0_BEFORE_RETURN_23 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 20:40:47,637 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:40:47,637 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:40:47,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2021-11-25 20:40:47,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246490609] [2021-11-25 20:40:47,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:40:47,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-25 20:40:47,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:40:47,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-25 20:40:47,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 20:40:47,640 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 20:40:47,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:40:47,721 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2021-11-25 20:40:47,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 20:40:47,722 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 20:40:47,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:40:47,723 INFO L225 Difference]: With dead ends: 62 [2021-11-25 20:40:47,723 INFO L226 Difference]: Without dead ends: 43 [2021-11-25 20:40:47,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 20:40:47,725 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:40:47,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:40:47,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-25 20:40:47,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-25 20:40:47,731 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 20:40:47,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-11-25 20:40:47,732 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 44 [2021-11-25 20:40:47,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:40:47,732 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-11-25 20:40:47,733 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 20:40:47,733 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2021-11-25 20:40:47,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-25 20:40:47,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:40:47,734 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 20:40:47,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-25 20:40:47,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:47,941 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:40:47,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:40:47,941 INFO L85 PathProgramCache]: Analyzing trace with hash -420544096, now seen corresponding path program 5 times [2021-11-25 20:40:47,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:40:47,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978791928] [2021-11-25 20:40:47,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:47,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:40:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:48,318 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 20:40:48,318 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:40:48,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978791928] [2021-11-25 20:40:48,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978791928] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:40:48,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768321023] [2021-11-25 20:40:48,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:40:48,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:48,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:40:48,319 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:40:48,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 20:40:48,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 20:40:48,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:40:48,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 20:40:48,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:40:48,575 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 20:40:48,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:40:48,770 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 20:40:48,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768321023] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:40:48,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [46818660] [2021-11-25 20:40:48,774 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:40:48,774 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:40:48,774 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:40:48,775 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:40:48,775 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:40:48,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:48,804 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 20:40:48,804 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 20:40:48,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:48,836 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:40:48,836 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 20:40:48,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:48,869 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 20:40:48,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:48,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:48,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:48,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:48,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:48,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:48,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:48,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:48,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:48,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:48,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:48,994 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-25 20:40:48,994 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 20:40:49,051 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 20:40:49,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:49,118 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 20:40:49,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:49,260 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 20:40:49,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:49,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:49,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:49,348 INFO L354 Elim1Store]: treesize reduction 60, result has 32.6 percent of original size [2021-11-25 20:40:49,349 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 20:40:49,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:49,411 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 20:40:49,422 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 20:40:49,551 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2021-11-25 20:40:49,579 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:40:50,563 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|))) (exists ((v_xor_~res~0_BEFORE_RETURN_30 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_xor_~res~0_BEFORE_RETURN_30 4294967296) 2147483647) (mod v_xor_~res~0_BEFORE_RETURN_30 4294967296) (+ (mod v_xor_~res~0_BEFORE_RETURN_30 4294967296) (- 4294967296))))) (= |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 20:40:50,563 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:40:50,563 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:40:50,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 35 [2021-11-25 20:40:50,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239365943] [2021-11-25 20:40:50,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:40:50,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-25 20:40:50,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:40:50,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-25 20:40:50,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=1831, Unknown=0, NotChecked=0, Total=2256 [2021-11-25 20:40:50,566 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 20:40:50,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:40:50,666 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2021-11-25 20:40:50,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-25 20:40:50,670 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 20:40:50,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:40:50,672 INFO L225 Difference]: With dead ends: 69 [2021-11-25 20:40:50,672 INFO L226 Difference]: Without dead ends: 50 [2021-11-25 20:40:50,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=425, Invalid=1831, Unknown=0, NotChecked=0, Total=2256 [2021-11-25 20:40:50,674 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 20:40:50,675 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 20:40:50,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-25 20:40:50,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-25 20:40:50,680 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 20:40:50,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-11-25 20:40:50,682 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 56 [2021-11-25 20:40:50,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:40:50,682 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-11-25 20:40:50,682 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 20:40:50,683 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-11-25 20:40:50,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-25 20:40:50,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:40:50,684 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 20:40:50,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 20:40:50,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:50,902 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:40:50,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:40:50,902 INFO L85 PathProgramCache]: Analyzing trace with hash -837045304, now seen corresponding path program 6 times [2021-11-25 20:40:50,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:40:50,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118256039] [2021-11-25 20:40:50,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:50,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:40:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:51,304 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 20:40:51,304 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:40:51,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118256039] [2021-11-25 20:40:51,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118256039] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:40:51,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922020846] [2021-11-25 20:40:51,305 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 20:40:51,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:51,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:40:51,307 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:40:51,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 20:40:51,456 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 20:40:51,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:40:51,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-25 20:40:51,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:40:51,594 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 20:40:51,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:40:52,527 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 20:40:52,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922020846] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:40:52,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1695048241] [2021-11-25 20:40:52,530 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:40:52,530 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:40:52,530 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:40:52,531 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:40:52,531 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:40:52,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:52,566 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:40:52,567 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 20:40:52,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:52,577 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 20:40:52,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:52,606 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 20:40:52,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:52,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:52,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:52,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:52,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:52,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:52,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:52,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:52,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:52,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:52,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:52,715 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-25 20:40:52,716 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 20:40:52,763 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 20:40:52,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:52,819 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 20:40:52,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:52,958 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 20:40:52,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:52,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:52,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:53,017 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-25 20:40:53,020 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 20:40:53,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:53,070 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 20:40:53,082 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 20:40:53,213 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2021-11-25 20:40:53,244 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:40:56,279 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_~#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)) (exists ((v_xor_~res~0_BEFORE_RETURN_36 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_xor_~res~0_BEFORE_RETURN_36 4294967296) 2147483647) (mod v_xor_~res~0_BEFORE_RETURN_36 4294967296) (+ (mod v_xor_~res~0_BEFORE_RETURN_36 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|))) (<= 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 20:40:56,279 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:40:56,279 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:40:56,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 26] total 51 [2021-11-25 20:40:56,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704349991] [2021-11-25 20:40:56,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:40:56,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-25 20:40:56,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:40:56,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-25 20:40:56,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1335, Invalid=2697, Unknown=0, NotChecked=0, Total=4032 [2021-11-25 20:40:56,284 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 20:40:56,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:40:56,415 INFO L93 Difference]: Finished difference Result 100 states and 132 transitions. [2021-11-25 20:40:56,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-25 20:40:56,416 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 75 [2021-11-25 20:40:56,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:40:56,419 INFO L225 Difference]: With dead ends: 100 [2021-11-25 20:40:56,419 INFO L226 Difference]: Without dead ends: 75 [2021-11-25 20:40:56,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1335, Invalid=2697, Unknown=0, NotChecked=0, Total=4032 [2021-11-25 20:40:56,423 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 20:40:56,424 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 20:40:56,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-25 20:40:56,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-11-25 20:40:56,443 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 20:40:56,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2021-11-25 20:40:56,447 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 75 [2021-11-25 20:40:56,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:40:56,448 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-11-25 20:40:56,448 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 20:40:56,448 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2021-11-25 20:40:56,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-25 20:40:56,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:40:56,455 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 20:40:56,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 20:40:56,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:56,671 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:40:56,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:40:56,672 INFO L85 PathProgramCache]: Analyzing trace with hash 610004512, now seen corresponding path program 7 times [2021-11-25 20:40:56,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:40:56,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228434557] [2021-11-25 20:40:56,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:56,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:40:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:57,937 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 20:40:57,937 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:40:57,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228434557] [2021-11-25 20:40:57,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228434557] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:40:57,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049852230] [2021-11-25 20:40:57,938 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 20:40:57,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:57,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:40:57,939 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:40:57,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 20:40:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:58,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-25 20:40:58,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:40:58,342 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 20:40:58,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:41:01,125 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 20:41:01,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049852230] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:41:01,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [951860288] [2021-11-25 20:41:01,128 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:41:01,128 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:41:01,128 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:41:01,128 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:41:01,129 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:41:01,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:01,156 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:41:01,156 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 20:41:01,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:01,180 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 20:41:01,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:01,209 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 20:41:01,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:01,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:01,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:01,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:01,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:01,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:41:01,333 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-25 20:41:01,339 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 20:41:01,423 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 20:41:01,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:01,496 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 20:41:01,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:01,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:01,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:41:01,609 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 20:41:01,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:01,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:01,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:01,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:01,651 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 20:41:01,655 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 20:41:01,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:01,696 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 20:41:01,715 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 20:41:01,859 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2021-11-25 20:41:01,886 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:41:03,037 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3897#(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) (exists ((v_xor_~res~0_BEFORE_RETURN_42 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_xor_~res~0_BEFORE_RETURN_42 4294967296) 2147483647) (mod v_xor_~res~0_BEFORE_RETURN_42 4294967296) (+ (mod v_xor_~res~0_BEFORE_RETURN_42 4294967296) (- 4294967296))))) (<= 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 20:41:03,038 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:41:03,038 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:41:03,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 51] total 101 [2021-11-25 20:41:03,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886259012] [2021-11-25 20:41:03,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:41:03,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-11-25 20:41:03,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:41:03,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-11-25 20:41:03,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5110, Invalid=7772, Unknown=0, NotChecked=0, Total=12882 [2021-11-25 20:41:03,048 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 20:41:03,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:41:03,347 INFO L93 Difference]: Finished difference Result 150 states and 207 transitions. [2021-11-25 20:41:03,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-11-25 20:41:03,347 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 20:41:03,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:41:03,349 INFO L225 Difference]: With dead ends: 150 [2021-11-25 20:41:03,349 INFO L226 Difference]: Without dead ends: 125 [2021-11-25 20:41:03,356 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 20:41:03,357 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 20:41:03,358 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 20:41:03,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-25 20:41:03,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-11-25 20:41:03,382 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 20:41:03,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2021-11-25 20:41:03,385 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 100 [2021-11-25 20:41:03,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:41:03,387 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2021-11-25 20:41:03,388 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 20:41:03,388 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2021-11-25 20:41:03,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-25 20:41:03,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:41:03,393 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 20:41:03,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 20:41:03,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 20:41:03,618 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:41:03,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:41:03,618 INFO L85 PathProgramCache]: Analyzing trace with hash 947223328, now seen corresponding path program 8 times [2021-11-25 20:41:03,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:41:03,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154917678] [2021-11-25 20:41:03,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:41:03,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:41:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:41:07,495 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 20:41:07,495 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:41:07,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154917678] [2021-11-25 20:41:07,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154917678] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:41:07,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665595069] [2021-11-25 20:41:07,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:41:07,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:41:07,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:41:07,497 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:41:07,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 20:41:07,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 20:41:07,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:41:07,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:41:07,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:41:07,981 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 20:41:07,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:41:08,337 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 20:41:08,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665595069] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:41:08,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [336832949] [2021-11-25 20:41:08,339 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:41:08,339 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:41:08,340 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:41:08,340 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:41:08,340 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:41:08,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:08,372 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 20:41:08,373 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 20:41:08,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:08,399 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:41:08,399 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 20:41:08,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:08,454 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 20:41:08,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:08,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:08,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:08,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:08,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:08,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:08,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:08,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:08,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:08,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:08,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:08,568 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-25 20:41:08,569 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 20:41:08,615 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 20:41:08,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:08,666 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 20:41:08,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:08,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:08,773 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:41:08,774 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 20:41:08,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:08,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:08,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:08,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:08,815 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 20:41:08,815 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 20:41:08,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:08,840 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 20:41:08,851 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 20:41:08,981 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2021-11-25 20:41:09,009 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:41:12,911 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5438#(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|) (exists ((v_xor_~res~0_BEFORE_RETURN_48 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_xor_~res~0_BEFORE_RETURN_48 4294967296) 2147483647) (mod v_xor_~res~0_BEFORE_RETURN_48 4294967296) (+ (mod v_xor_~res~0_BEFORE_RETURN_48 4294967296) (- 4294967296))))) (<= 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 20:41:12,912 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:41:12,912 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:41:12,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 5, 5] total 107 [2021-11-25 20:41:12,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360287008] [2021-11-25 20:41:12,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:41:12,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2021-11-25 20:41:12,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:41:12,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-11-25 20:41:12,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5137, Invalid=9143, Unknown=0, NotChecked=0, Total=14280 [2021-11-25 20:41:12,919 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 20:41:13,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:41:13,095 INFO L93 Difference]: Finished difference Result 155 states and 167 transitions. [2021-11-25 20:41:13,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-11-25 20:41:13,096 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 20:41:13,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:41:13,099 INFO L225 Difference]: With dead ends: 155 [2021-11-25 20:41:13,099 INFO L226 Difference]: Without dead ends: 130 [2021-11-25 20:41:13,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1988 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=5137, Invalid=9143, Unknown=0, NotChecked=0, Total=14280 [2021-11-25 20:41:13,104 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 20:41:13,104 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 20:41:13,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-25 20:41:13,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-11-25 20:41:13,116 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 20:41:13,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 134 transitions. [2021-11-25 20:41:13,119 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 134 transitions. Word has length 150 [2021-11-25 20:41:13,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:41:13,120 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 134 transitions. [2021-11-25 20:41:13,120 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 20:41:13,120 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 134 transitions. [2021-11-25 20:41:13,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-25 20:41:13,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:41:13,124 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 20:41:13,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 20:41:13,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:41:13,338 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:41:13,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:41:13,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1261188744, now seen corresponding path program 9 times [2021-11-25 20:41:13,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:41:13,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422415651] [2021-11-25 20:41:13,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:41:13,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:41:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:41:17,448 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 20:41:17,449 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:41:17,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422415651] [2021-11-25 20:41:17,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422415651] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:41:17,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331509966] [2021-11-25 20:41:17,449 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 20:41:17,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:41:17,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:41:17,450 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:41:17,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-25 20:41:17,756 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 20:41:17,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:41:17,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 101 conjunts are in the unsatisfiable core [2021-11-25 20:41:17,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:41:18,113 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 20:41:18,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:41:18,553 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 20:41:18,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331509966] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:41:18,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [68426361] [2021-11-25 20:41:18,555 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:41:18,555 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:41:18,556 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:41:18,556 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:41:18,556 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:41:18,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:18,583 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:41:18,584 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 20:41:18,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:18,595 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 20:41:18,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:18,618 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 20:41:18,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:18,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:18,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:18,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:18,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:18,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:18,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:18,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:18,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:18,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:18,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:18,739 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-25 20:41:18,739 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 20:41:18,776 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 20:41:18,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:18,839 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 20:41:18,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:18,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:18,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:41:18,936 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 20:41:18,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:18,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:18,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:18,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:18,975 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 20:41:18,975 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 20:41:18,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:18,998 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 20:41:19,009 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 20:41:19,121 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2021-11-25 20:41:19,145 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:41:25,090 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7025#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_xor_~res~0_BEFORE_RETURN_53 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_xor_~res~0_BEFORE_RETURN_53 4294967296) 2147483647) (mod v_xor_~res~0_BEFORE_RETURN_53 4294967296) (+ (mod v_xor_~res~0_BEFORE_RETURN_53 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 20:41:25,090 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:41:25,090 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:41:25,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101, 102] total 103 [2021-11-25 20:41:25,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81031222] [2021-11-25 20:41:25,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:41:25,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-11-25 20:41:25,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:41:25,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-11-25 20:41:25,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5313, Invalid=8027, Unknown=0, NotChecked=0, Total=13340 [2021-11-25 20:41:25,105 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 20:41:25,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:41:25,219 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2021-11-25 20:41:25,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-11-25 20:41:25,228 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 20:41:25,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:41:25,229 INFO L225 Difference]: With dead ends: 160 [2021-11-25 20:41:25,229 INFO L226 Difference]: Without dead ends: 131 [2021-11-25 20:41:25,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 450 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1546 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=5313, Invalid=8027, Unknown=0, NotChecked=0, Total=13340 [2021-11-25 20:41:25,233 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 20:41:25,234 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 20:41:25,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-25 20:41:25,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-11-25 20:41:25,241 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 20:41:25,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2021-11-25 20:41:25,243 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 155 [2021-11-25 20:41:25,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:41:25,244 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2021-11-25 20:41:25,245 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 20:41:25,245 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2021-11-25 20:41:25,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-25 20:41:25,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:41:25,247 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 20:41:25,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-25 20:41:25,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-25 20:41:25,463 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:41:25,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:41:25,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1519748320, now seen corresponding path program 10 times [2021-11-25 20:41:25,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:41:25,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577267510] [2021-11-25 20:41:25,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:41:25,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:41:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:41:25,763 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 20:41:25,763 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:41:25,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577267510] [2021-11-25 20:41:25,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577267510] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:41:25,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429717108] [2021-11-25 20:41:25,764 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 20:41:25,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:41:25,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:41:25,765 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:41:25,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-25 20:41:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:41:26,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 1170 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 20:41:26,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:41:26,379 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 20:41:26,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:41:26,789 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 20:41:26,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429717108] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:41:26,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [265646039] [2021-11-25 20:41:26,792 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:41:26,792 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:41:26,792 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:41:26,793 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:41:26,793 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:41:26,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:26,825 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 20:41:26,826 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 20:41:26,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:26,854 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:41:26,855 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 20:41:26,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:26,887 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 20:41:26,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:26,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:26,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:26,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:26,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:26,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:41:26,995 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-25 20:41:26,996 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 20:41:27,156 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 20:41:27,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:27,212 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 20:41:27,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:27,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:27,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:41:27,308 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 20:41:27,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:27,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:27,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:27,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:27,352 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 20:41:27,352 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 20:41:27,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:27,381 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 20:41:27,390 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 20:41:27,500 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2021-11-25 20:41:27,528 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:41:32,444 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8552#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |#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|))) (= |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|))) (<= |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_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 20:41:32,444 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:41:32,444 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:41:32,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-11-25 20:41:32,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729660854] [2021-11-25 20:41:32,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:41:32,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-25 20:41:32,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:41:32,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-25 20:41:32,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 20:41:32,446 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 20:41:32,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:41:32,551 INFO L93 Difference]: Finished difference Result 171 states and 192 transitions. [2021-11-25 20:41:32,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 20:41:32,552 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 20:41:32,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:41:32,554 INFO L225 Difference]: With dead ends: 171 [2021-11-25 20:41:32,554 INFO L226 Difference]: Without dead ends: 143 [2021-11-25 20:41:32,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 20:41:32,555 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:41:32,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:41:32,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-25 20:41:32,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-11-25 20:41:32,564 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 20:41:32,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 147 transitions. [2021-11-25 20:41:32,566 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 147 transitions. Word has length 156 [2021-11-25 20:41:32,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:41:32,567 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 147 transitions. [2021-11-25 20:41:32,567 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 20:41:32,567 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 147 transitions. [2021-11-25 20:41:32,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-25 20:41:32,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:41:32,570 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 20:41:32,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-25 20:41:32,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:41:32,799 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:41:32,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:41:32,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1800960992, now seen corresponding path program 11 times [2021-11-25 20:41:32,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:41:32,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265525165] [2021-11-25 20:41:32,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:41:32,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:41:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:41:33,266 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 20:41:33,267 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:41:33,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265525165] [2021-11-25 20:41:33,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265525165] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:41:33,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044412442] [2021-11-25 20:41:33,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:41:33,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:41:33,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:41:33,269 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:41:33,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-25 20:41:33,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 20:41:33,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:41:33,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 20:41:33,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:41:33,972 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 20:41:33,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:41:34,339 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 20:41:34,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044412442] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:41:34,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2016435380] [2021-11-25 20:41:34,341 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:41:34,341 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:41:34,342 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:41:34,342 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:41:34,342 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:41:34,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:34,377 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:41:34,377 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 20:41:34,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:34,385 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 20:41:34,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:34,414 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 20:41:34,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:34,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:34,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:34,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:34,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:34,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:41:34,511 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-25 20:41:34,511 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 20:41:34,590 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 20:41:34,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:34,645 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 20:41:34,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:34,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:34,759 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:41:34,759 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 20:41:34,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:34,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:34,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:34,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:34,800 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 20:41:34,800 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 20:41:34,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:34,828 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 20:41:34,838 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 20:41:34,962 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2021-11-25 20:41:34,988 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:41:38,015 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10355#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_xor_~res~0_BEFORE_RETURN_66 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_xor_~res~0_BEFORE_RETURN_66 4294967296) 2147483647) (mod v_xor_~res~0_BEFORE_RETURN_66 4294967296) (+ (mod v_xor_~res~0_BEFORE_RETURN_66 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 20:41:38,015 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:41:38,016 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:41:38,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9, 9] total 39 [2021-11-25 20:41:38,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146813729] [2021-11-25 20:41:38,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:41:38,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-25 20:41:38,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:41:38,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-25 20:41:38,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=2173, Unknown=0, NotChecked=0, Total=2652 [2021-11-25 20:41:38,017 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 20:41:38,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:41:38,101 INFO L93 Difference]: Finished difference Result 192 states and 210 transitions. [2021-11-25 20:41:38,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-25 20:41:38,102 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 20:41:38,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:41:38,103 INFO L225 Difference]: With dead ends: 192 [2021-11-25 20:41:38,103 INFO L226 Difference]: Without dead ends: 152 [2021-11-25 20:41:38,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=479, Invalid=2173, Unknown=0, NotChecked=0, Total=2652 [2021-11-25 20:41:38,104 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 20:41:38,104 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 20:41:38,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-25 20:41:38,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-25 20:41:38,112 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 20:41:38,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 156 transitions. [2021-11-25 20:41:38,113 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 156 transitions. Word has length 192 [2021-11-25 20:41:38,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:41:38,114 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 156 transitions. [2021-11-25 20:41:38,114 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 20:41:38,114 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 156 transitions. [2021-11-25 20:41:38,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-25 20:41:38,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:41:38,117 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 20:41:38,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-25 20:41:38,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:41:38,338 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:41:38,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:41:38,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1880524212, now seen corresponding path program 12 times [2021-11-25 20:41:38,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:41:38,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838510123] [2021-11-25 20:41:38,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:41:38,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:41:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:41:38,927 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 20:41:38,927 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:41:38,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838510123] [2021-11-25 20:41:38,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838510123] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:41:38,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856678116] [2021-11-25 20:41:38,928 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 20:41:38,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:41:38,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:41:38,932 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:41:38,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-25 20:41:39,358 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 20:41:39,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:41:39,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 1343 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-25 20:41:39,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:41:39,694 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 20:41:39,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:41:40,609 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 20:41:40,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856678116] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:41:40,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [634129215] [2021-11-25 20:41:40,611 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:41:40,612 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:41:40,612 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:41:40,612 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:41:40,612 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:41:40,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:40,649 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:41:40,649 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 20:41:40,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:40,660 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 20:41:40,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:40,691 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 20:41:40,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:40,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:40,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:40,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:40,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:40,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:41:40,804 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-25 20:41:40,805 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 20:41:40,919 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 20:41:40,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:40,980 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 20:41:41,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:41,101 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 20:41:41,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:41,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:41,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:41,156 INFO L354 Elim1Store]: treesize reduction 60, result has 32.6 percent of original size [2021-11-25 20:41:41,156 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 20:41:41,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:41,204 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 20:41:41,218 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 20:41:41,326 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2021-11-25 20:41:41,362 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:41:44,294 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|))) (exists ((v_xor_~res~0_BEFORE_RETURN_72 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_xor_~res~0_BEFORE_RETURN_72 4294967296) 2147483647) (mod v_xor_~res~0_BEFORE_RETURN_72 4294967296) (+ (mod v_xor_~res~0_BEFORE_RETURN_72 4294967296) (- 4294967296))))) (= |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 20:41:44,294 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:41:44,294 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:41:44,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2021-11-25 20:41:44,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683689653] [2021-11-25 20:41:44,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:41:44,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-25 20:41:44,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:41:44,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-25 20:41:44,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1335, Invalid=2697, Unknown=0, NotChecked=0, Total=4032 [2021-11-25 20:41:44,297 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 20:41:44,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:41:44,402 INFO L93 Difference]: Finished difference Result 226 states and 260 transitions. [2021-11-25 20:41:44,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-25 20:41:44,403 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 20:41:44,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:41:44,404 INFO L225 Difference]: With dead ends: 226 [2021-11-25 20:41:44,404 INFO L226 Difference]: Without dead ends: 177 [2021-11-25 20:41:44,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1335, Invalid=2697, Unknown=0, NotChecked=0, Total=4032 [2021-11-25 20:41:44,406 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 20:41:44,406 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 20:41:44,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-25 20:41:44,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-11-25 20:41:44,414 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 20:41:44,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 181 transitions. [2021-11-25 20:41:44,416 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 181 transitions. Word has length 203 [2021-11-25 20:41:44,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:41:44,416 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 181 transitions. [2021-11-25 20:41:44,417 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 20:41:44,417 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 181 transitions. [2021-11-25 20:41:44,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-11-25 20:41:44,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:41:44,421 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 20:41:44,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-25 20:41:44,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-25 20:41:44,647 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:41:44,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:41:44,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1187111392, now seen corresponding path program 13 times [2021-11-25 20:41:44,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:41:44,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581859024] [2021-11-25 20:41:44,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:41:44,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:41:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:41:46,138 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 20:41:46,138 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:41:46,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581859024] [2021-11-25 20:41:46,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581859024] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:41:46,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387782084] [2021-11-25 20:41:46,138 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 20:41:46,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:41:46,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:41:46,140 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:41:46,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-25 20:41:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:41:46,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 1568 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-25 20:41:46,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:41:47,044 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 20:41:47,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:41:50,101 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 20:41:50,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387782084] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:41:50,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [33943680] [2021-11-25 20:41:50,104 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:41:50,104 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:41:50,104 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:41:50,104 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:41:50,105 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:41:50,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:50,142 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:41:50,143 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 20:41:50,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:50,150 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 20:41:50,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:50,191 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 20:41:50,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:50,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:50,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:50,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:50,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:50,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:41:50,298 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-25 20:41:50,298 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 20:41:50,384 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 20:41:50,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:50,430 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 20:41:50,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:50,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:50,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:41:50,506 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 20:41:50,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:50,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:50,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:50,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:50,546 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 20:41:50,547 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 20:41:50,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:41:50,568 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 20:41:50,578 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 20:41:50,695 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2021-11-25 20:41:50,726 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:41:53,920 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14855#(and (exists ((v_xor_~res~0_BEFORE_RETURN_77 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_xor_~res~0_BEFORE_RETURN_77 4294967296) 2147483647) (mod v_xor_~res~0_BEFORE_RETURN_77 4294967296) (+ (mod v_xor_~res~0_BEFORE_RETURN_77 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 20:41:53,920 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:41:53,920 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:41:53,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 101 [2021-11-25 20:41:53,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754302734] [2021-11-25 20:41:53,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:41:53,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-11-25 20:41:53,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:41:53,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-11-25 20:41:53,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5110, Invalid=7772, Unknown=0, NotChecked=0, Total=12882 [2021-11-25 20:41:53,924 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 20:41:54,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:41:54,126 INFO L93 Difference]: Finished difference Result 301 states and 360 transitions. [2021-11-25 20:41:54,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-11-25 20:41:54,127 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 20:41:54,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:41:54,129 INFO L225 Difference]: With dead ends: 301 [2021-11-25 20:41:54,129 INFO L226 Difference]: Without dead ends: 227 [2021-11-25 20:41:54,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 883 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2138 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=5110, Invalid=7772, Unknown=0, NotChecked=0, Total=12882 [2021-11-25 20:41:54,132 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 20:41:54,132 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 20:41:54,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-25 20:41:54,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-25 20:41:54,142 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 20:41:54,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 231 transitions. [2021-11-25 20:41:54,147 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 231 transitions. Word has length 278 [2021-11-25 20:41:54,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:41:54,147 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 231 transitions. [2021-11-25 20:41:54,148 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 20:41:54,148 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 231 transitions. [2021-11-25 20:41:54,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-11-25 20:41:54,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:41:54,151 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 20:41:54,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-25 20:41:54,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-25 20:41:54,363 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:41:54,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:41:54,364 INFO L85 PathProgramCache]: Analyzing trace with hash -125203360, now seen corresponding path program 14 times [2021-11-25 20:41:54,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:41:54,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476675169] [2021-11-25 20:41:54,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:41:54,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:41:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:41:58,660 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 20:41:58,660 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:41:58,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476675169] [2021-11-25 20:41:58,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476675169] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:41:58,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4549020] [2021-11-25 20:41:58,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:41:58,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:41:58,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:41:58,667 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:41:58,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-25 20:42:00,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-25 20:42:00,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:42:00,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-25 20:42:00,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:42:02,159 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 20:42:02,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:42:03,573 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 20:42:03,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4549020] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:42:03,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1872410888] [2021-11-25 20:42:03,576 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:42:03,576 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:42:03,576 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:42:03,577 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:42:03,577 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:42:03,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:03,606 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 20:42:03,606 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 20:42:03,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:03,627 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:42:03,628 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 20:42:03,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:03,646 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 20:42:03,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:03,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:03,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:03,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:03,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:03,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:42:03,749 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-25 20:42:03,749 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 20:42:03,850 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 20:42:03,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:03,906 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 30 treesize of output 20 [2021-11-25 20:42:04,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:04,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:04,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:42:04,004 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 20:42:04,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:04,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:04,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:04,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:04,042 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 20:42:04,042 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 20:42:04,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:04,070 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 20:42:04,082 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 20:42:04,217 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2021-11-25 20:42:04,245 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:42:08,045 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18594#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_xor_~res~0_BEFORE_RETURN_84 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_xor_~res~0_BEFORE_RETURN_84 4294967296) 2147483647) (mod v_xor_~res~0_BEFORE_RETURN_84 4294967296) (+ (mod v_xor_~res~0_BEFORE_RETURN_84 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 20:42:08,045 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:42:08,045 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:42:08,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 17, 17] total 131 [2021-11-25 20:42:08,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213589183] [2021-11-25 20:42:08,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:42:08,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2021-11-25 20:42:08,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:42:08,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2021-11-25 20:42:08,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5605, Invalid=14987, Unknown=0, NotChecked=0, Total=20592 [2021-11-25 20:42:08,056 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 20:42:08,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:42:08,335 INFO L93 Difference]: Finished difference Result 368 states and 394 transitions. [2021-11-25 20:42:08,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-11-25 20:42:08,335 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 20:42:08,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:42:08,340 INFO L225 Difference]: With dead ends: 368 [2021-11-25 20:42:08,341 INFO L226 Difference]: Without dead ends: 244 [2021-11-25 20:42:08,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1383 GetRequests, 1241 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4808 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=5605, Invalid=14987, Unknown=0, NotChecked=0, Total=20592 [2021-11-25 20:42:08,344 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 20:42:08,349 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 20:42:08,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-25 20:42:08,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-11-25 20:42:08,362 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 20:42:08,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 248 transitions. [2021-11-25 20:42:08,365 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 248 transitions. Word has length 428 [2021-11-25 20:42:08,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:42:08,366 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 248 transitions. [2021-11-25 20:42:08,367 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 20:42:08,367 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 248 transitions. [2021-11-25 20:42:08,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2021-11-25 20:42:08,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:42:08,370 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 20:42:08,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-25 20:42:08,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:42:08,575 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:42:08,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:42:08,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1466225228, now seen corresponding path program 15 times [2021-11-25 20:42:08,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:42:08,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412502514] [2021-11-25 20:42:08,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:42:08,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:42:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:42:09,535 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 20:42:09,535 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:42:09,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412502514] [2021-11-25 20:42:09,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412502514] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:42:09,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859945058] [2021-11-25 20:42:09,536 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 20:42:09,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:42:09,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:42:09,538 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:42:09,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-25 20:42:10,087 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 20:42:10,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:42:10,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 2139 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-25 20:42:10,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:42:10,738 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 20:42:10,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:42:12,365 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 20:42:12,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859945058] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:42:12,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [213284994] [2021-11-25 20:42:12,368 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:42:12,368 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:42:12,368 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:42:12,369 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:42:12,369 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:42:12,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:12,394 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 20:42:12,394 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 20:42:12,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:12,415 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:42:12,416 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 20:42:12,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:12,437 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 20:42:12,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:12,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:12,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:12,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:12,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:12,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:42:12,576 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-25 20:42:12,576 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 20:42:12,668 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 20:42:12,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:12,710 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 20:42:12,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:12,787 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 20:42:12,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:12,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:12,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:12,831 INFO L354 Elim1Store]: treesize reduction 60, result has 32.6 percent of original size [2021-11-25 20:42:12,831 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 20:42:12,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:12,917 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 20:42:12,927 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 20:42:13,024 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2021-11-25 20:42:13,047 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:42:16,003 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22549#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_xor_~res~0_BEFORE_RETURN_90 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_xor_~res~0_BEFORE_RETURN_90 4294967296) 2147483647) (mod v_xor_~res~0_BEFORE_RETURN_90 4294967296) (+ (mod v_xor_~res~0_BEFORE_RETURN_90 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 20:42:16,003 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:42:16,003 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:42:16,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 65 [2021-11-25 20:42:16,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236657981] [2021-11-25 20:42:16,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:42:16,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-11-25 20:42:16,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:42:16,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-11-25 20:42:16,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2140, Invalid=3866, Unknown=0, NotChecked=0, Total=6006 [2021-11-25 20:42:16,007 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 20:42:16,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:42:16,124 INFO L93 Difference]: Finished difference Result 383 states and 419 transitions. [2021-11-25 20:42:16,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-25 20:42:16,125 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 20:42:16,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:42:16,127 INFO L225 Difference]: With dead ends: 383 [2021-11-25 20:42:16,128 INFO L226 Difference]: Without dead ends: 276 [2021-11-25 20:42:16,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1372 GetRequests, 1296 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1364 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2140, Invalid=3866, Unknown=0, NotChecked=0, Total=6006 [2021-11-25 20:42:16,129 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 20:42:16,130 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 20:42:16,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-25 20:42:16,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-11-25 20:42:16,142 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 20:42:16,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 280 transitions. [2021-11-25 20:42:16,144 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 280 transitions. Word has length 447 [2021-11-25 20:42:16,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:42:16,145 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 280 transitions. [2021-11-25 20:42:16,145 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 20:42:16,145 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 280 transitions. [2021-11-25 20:42:16,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2021-11-25 20:42:16,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:42:16,150 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 20:42:16,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-25 20:42:16,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-25 20:42:16,375 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:42:16,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:42:16,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1387686836, now seen corresponding path program 16 times [2021-11-25 20:42:16,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:42:16,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219035760] [2021-11-25 20:42:16,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:42:16,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:42:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:42:18,569 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 20:42:18,569 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:42:18,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219035760] [2021-11-25 20:42:18,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219035760] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:42:18,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551475346] [2021-11-25 20:42:18,570 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 20:42:18,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:42:18,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:42:18,578 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:42:18,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-25 20:42:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:42:19,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 2363 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-25 20:42:19,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:42:19,939 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 20:42:19,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:42:22,703 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 20:42:22,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551475346] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:42:22,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [389838997] [2021-11-25 20:42:22,705 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:42:22,705 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:42:22,706 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:42:22,706 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:42:22,706 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:42:22,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:22,750 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 20:42:22,751 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 20:42:22,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:22,779 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:42:22,779 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 20:42:22,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:22,803 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 20:42:22,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:22,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:22,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:22,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:22,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:22,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:22,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:22,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:22,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:22,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:22,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:22,888 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-25 20:42:22,889 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 20:42:22,932 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 20:42:22,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:22,995 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 20:42:23,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:23,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:23,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:42:23,091 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 20:42:23,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:23,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:23,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:23,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:23,130 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 20:42:23,131 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 20:42:23,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:42:23,155 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 20:42:23,166 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 20:42:23,332 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2021-11-25 20:42:23,360 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:42:28,632 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26829#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_xor_~res~0_BEFORE_RETURN_96 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_xor_~res~0_BEFORE_RETURN_96 4294967296) 2147483647) (mod v_xor_~res~0_BEFORE_RETURN_96 4294967296) (+ (mod v_xor_~res~0_BEFORE_RETURN_96 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 20:42:28,632 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:42:28,632 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:42:28,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 102 [2021-11-25 20:42:28,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809126479] [2021-11-25 20:42:28,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:42:28,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2021-11-25 20:42:28,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:42:28,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-11-25 20:42:28,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5211, Invalid=7899, Unknown=0, NotChecked=0, Total=13110 [2021-11-25 20:42:28,636 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 20:42:28,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:42:28,763 INFO L93 Difference]: Finished difference Result 420 states and 461 transitions. [2021-11-25 20:42:28,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-11-25 20:42:28,764 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 20:42:28,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:42:28,766 INFO L225 Difference]: With dead ends: 420 [2021-11-25 20:42:28,766 INFO L226 Difference]: Without dead ends: 313 [2021-11-25 20:42:28,768 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 20:42:28,769 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 20:42:28,769 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 20:42:28,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-11-25 20:42:28,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-11-25 20:42:28,782 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 20:42:28,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 317 transitions. [2021-11-25 20:42:28,785 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 317 transitions. Word has length 479 [2021-11-25 20:42:28,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:42:28,786 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 317 transitions. [2021-11-25 20:42:28,786 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 20:42:28,786 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 317 transitions. [2021-11-25 20:42:28,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2021-11-25 20:42:28,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:42:28,791 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 20:42:28,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-25 20:42:29,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:42:29,011 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:42:29,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:42:29,012 INFO L85 PathProgramCache]: Analyzing trace with hash -588272563, now seen corresponding path program 17 times [2021-11-25 20:42:29,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:42:29,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209286068] [2021-11-25 20:42:29,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:42:29,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:42:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:42:44,615 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 20:42:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:42:50,967 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 20:42:50,967 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 20:42:50,969 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 20:42:50,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 20:42:50,974 INFO L732 BasicCegarLoop]: Path program histogram: [17, 1, 1, 1] [2021-11-25 20:42:50,981 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 20:42:51,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:42:51 BoogieIcfgContainer [2021-11-25 20:42:51,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 20:42:51,371 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 20:42:51,372 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 20:42:51,372 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 20:42:51,372 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:40:19" (3/4) ... [2021-11-25 20:42:51,375 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 20:42:51,375 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 20:42:51,375 INFO L158 Benchmark]: Toolchain (without parser) took 152179.23ms. Allocated memory was 123.7MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 82.2MB in the beginning and 988.1MB in the end (delta: -905.9MB). Peak memory consumption was 251.6MB. Max. memory is 16.1GB. [2021-11-25 20:42:51,375 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 123.7MB. Free memory is still 98.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:42:51,375 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.18ms. Allocated memory is still 123.7MB. Free memory was 82.1MB in the beginning and 97.2MB in the end (delta: -15.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 20:42:51,375 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.30ms. Allocated memory is still 123.7MB. Free memory was 96.7MB in the beginning and 95.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:42:51,376 INFO L158 Benchmark]: Boogie Preprocessor took 49.12ms. Allocated memory is still 123.7MB. Free memory was 95.3MB in the beginning and 94.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 20:42:51,376 INFO L158 Benchmark]: RCFGBuilder took 319.87ms. Allocated memory is still 123.7MB. Free memory was 94.1MB in the beginning and 82.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 20:42:51,377 INFO L158 Benchmark]: TraceAbstraction took 151430.06ms. Allocated memory was 123.7MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 81.6MB in the beginning and 989.1MB in the end (delta: -907.6MB). Peak memory consumption was 774.2MB. Max. memory is 16.1GB. [2021-11-25 20:42:51,377 INFO L158 Benchmark]: Witness Printer took 3.14ms. Allocated memory is still 1.3GB. Free memory was 989.1MB in the beginning and 988.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:42:51,378 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 123.7MB. Free memory is still 98.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.18ms. Allocated memory is still 123.7MB. Free memory was 82.1MB in the beginning and 97.2MB in the end (delta: -15.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.30ms. Allocated memory is still 123.7MB. Free memory was 96.7MB in the beginning and 95.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 49.12ms. Allocated memory is still 123.7MB. Free memory was 95.3MB in the beginning and 94.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 319.87ms. Allocated memory is still 123.7MB. Free memory was 94.1MB in the beginning and 82.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 151430.06ms. Allocated memory was 123.7MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 81.6MB in the beginning and 989.1MB in the end (delta: -907.6MB). Peak memory consumption was 774.2MB. Max. memory is 16.1GB. * Witness Printer took 3.14ms. Allocated memory is still 1.3GB. Free memory was 989.1MB in the beginning and 988.1MB 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 bitwiseXor 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 xor(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 xor(x) VAL [i=100, x={9:0}, xor(x)=-1] [L41] ret = xor(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=-1, temp=-3, x={9:0}] [L44] CALL, EXPR xor(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 xor(x) VAL [i=100, ret=-1, temp=-3, x={9:0}, xor(x)=65] [L44] ret2 = xor(x) [L45] EXPR x[0] [L45] temp=x[0] [L46] int i =0 ; VAL [i=0, i=100, ret=-1, ret2=65, 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=1, i=100, ret=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=7, ret=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=14, ret=-1, ret2=65, 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=15, i=100, ret=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=18, i=100, ret=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=22, ret=-1, ret2=65, 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=23, i=100, ret=-1, ret2=65, 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=-1, ret2=65, 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=25, i=100, ret=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=30, ret=-1, ret2=65, 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=31, i=100, ret=-1, ret2=65, 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=-1, ret2=65, 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=33, i=100, ret=-1, ret2=65, 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=-1, ret2=65, 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=35, ret=-1, ret2=65, 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=-1, ret2=65, 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=37, i=100, ret=-1, ret2=65, 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=38, ret=-1, ret2=65, 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=-1, ret2=65, 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=40, i=100, ret=-1, ret2=65, 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=-1, ret2=65, 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=42, ret=-1, ret2=65, 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=-1, ret2=65, 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=44, ret=-1, ret2=65, 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=-1, ret2=65, 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=46, ret=-1, ret2=65, 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=47, i=100, ret=-1, ret2=65, 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=-1, ret2=65, 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=49, i=100, ret=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=55, ret=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=60, i=100, ret=-1, ret2=65, 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=-1, ret2=65, 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=62, ret=-1, ret2=65, 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=-1, ret2=65, 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=64, ret=-1, ret2=65, 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=-1, ret2=65, 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=66, ret=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=69, i=100, ret=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=72, ret=-1, ret2=65, 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=73, ret=-1, ret2=65, 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=74, ret=-1, ret2=65, 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=75, ret=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=79, ret=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=83, i=100, ret=-1, ret2=65, 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=84, i=100, ret=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=88, i=100, ret=-1, ret2=65, 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=89, i=100, ret=-1, ret2=65, 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=90, ret=-1, ret2=65, 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=91, ret=-1, ret2=65, 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=92, ret=-1, ret2=65, 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=93, ret=-1, ret2=65, 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=94, i=100, ret=-1, ret2=65, 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=-1, ret2=65, 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=-1, ret2=65, 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=97, ret=-1, ret2=65, 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=98, ret=-1, ret2=65, 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=99, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND FALSE !(i<100 -1) [L49] x[100 -1] = temp VAL [i=100, i=99, ret=-1, ret2=65, temp=-3, x={9:0}] [L50] CALL, EXPR xor(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 xor(x) VAL [i=100, i=99, ret=-1, ret2=65, temp=-3, x={9:0}, xor(x)=66] [L50] ret5 = xor(x) [L52] COND TRUE ret != ret2 || ret !=ret5 VAL [i=100, i=99, ret=-1, ret2=65, ret5=66, temp=-3, x={9:0}] [L53] reach_error() VAL [i=99, i=100, ret=-1, ret2=65, ret5=66, temp=-3, x={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 151.0s, OverallIterations: 20, TraceHistogramMax: 297, PathProgramHistogramMax: 17, EmptinessCheckTime: 0.1s, AutomataDifference: 2.4s, 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, 89.7s 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: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 21.2s 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 20:42:51,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/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_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/xor1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/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_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/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 fa90627ffc045ef90595d49d60ca0f6095b53b667a9d0f028eb93e7bf4c6c579 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:42:54,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:42:54,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:42:54,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:42:54,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:42:54,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:42:54,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:42:54,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:42:54,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:42:54,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:42:54,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:42:54,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:42:54,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:42:54,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:42:54,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:42:54,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:42:54,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:42:54,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:42:54,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:42:54,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:42:54,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:42:54,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:42:54,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:42:54,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:42:54,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:42:54,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:42:54,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:42:54,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:42:54,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:42:54,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:42:54,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:42:54,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:42:54,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:42:54,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:42:54,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:42:54,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:42:54,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:42:54,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:42:54,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:42:54,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:42:54,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:42:54,191 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 20:42:54,225 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:42:54,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:42:54,229 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:42:54,229 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:42:54,230 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:42:54,231 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:42:54,231 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:42:54,231 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:42:54,231 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:42:54,232 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:42:54,233 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:42:54,233 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:42:54,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:42:54,235 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:42:54,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:42:54,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:42:54,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:42:54,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:42:54,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:42:54,237 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 20:42:54,237 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 20:42:54,237 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 20:42:54,237 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:42:54,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:42:54,238 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:42:54,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:42:54,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:42:54,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 20:42:54,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:42:54,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:42:54,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:42:54,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:42:54,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:42:54,240 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 20:42:54,241 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 20:42:54,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:42:54,241 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:42:54,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:42:54,242 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_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa90627ffc045ef90595d49d60ca0f6095b53b667a9d0f028eb93e7bf4c6c579 [2021-11-25 20:42:54,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:42:54,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:42:54,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:42:54,686 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:42:54,686 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:42:54,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/array-crafted/xor1.i [2021-11-25 20:42:54,767 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/data/ea97abef6/72ce34479405464c85cfa3118e416825/FLAG9fbb04275 [2021-11-25 20:42:55,374 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:42:55,376 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/sv-benchmarks/c/array-crafted/xor1.i [2021-11-25 20:42:55,388 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/data/ea97abef6/72ce34479405464c85cfa3118e416825/FLAG9fbb04275 [2021-11-25 20:42:55,721 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/data/ea97abef6/72ce34479405464c85cfa3118e416825 [2021-11-25 20:42:55,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:42:55,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:42:55,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:42:55,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:42:55,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:42:55,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:42:55" (1/1) ... [2021-11-25 20:42:55,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7152ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:42:55, skipping insertion in model container [2021-11-25 20:42:55,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:42:55" (1/1) ... [2021-11-25 20:42:55,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:42:55,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:42:55,962 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_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/sv-benchmarks/c/array-crafted/xor1.i[1285,1298] [2021-11-25 20:42:55,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:42:55,979 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:42:56,052 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_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/sv-benchmarks/c/array-crafted/xor1.i[1285,1298] [2021-11-25 20:42:56,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:42:56,081 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:42:56,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:42:56 WrapperNode [2021-11-25 20:42:56,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:42:56,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:42:56,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:42:56,085 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:42:56,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:42:56" (1/1) ... [2021-11-25 20:42:56,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:42:56" (1/1) ... [2021-11-25 20:42:56,139 INFO L137 Inliner]: procedures = 18, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 70 [2021-11-25 20:42:56,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:42:56,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:42:56,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:42:56,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:42:56,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:42:56" (1/1) ... [2021-11-25 20:42:56,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:42:56" (1/1) ... [2021-11-25 20:42:56,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:42:56" (1/1) ... [2021-11-25 20:42:56,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:42:56" (1/1) ... [2021-11-25 20:42:56,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:42:56" (1/1) ... [2021-11-25 20:42:56,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:42:56" (1/1) ... [2021-11-25 20:42:56,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:42:56" (1/1) ... [2021-11-25 20:42:56,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:42:56,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:42:56,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:42:56,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:42:56,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:42:56" (1/1) ... [2021-11-25 20:42:56,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:42:56,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:42:56,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:42:56,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:42:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:42:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 20:42:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:42:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 20:42:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:42:56,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:42:56,294 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2021-11-25 20:42:56,294 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2021-11-25 20:42:56,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:42:56,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 20:42:56,412 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:42:56,417 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:42:56,764 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:42:56,771 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:42:56,772 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 20:42:56,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:42:56 BoogieIcfgContainer [2021-11-25 20:42:56,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:42:56,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:42:56,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:42:56,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:42:56,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:42:55" (1/3) ... [2021-11-25 20:42:56,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e16fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:42:56, skipping insertion in model container [2021-11-25 20:42:56,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:42:56" (2/3) ... [2021-11-25 20:42:56,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e16fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:42:56, skipping insertion in model container [2021-11-25 20:42:56,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:42:56" (3/3) ... [2021-11-25 20:42:56,811 INFO L111 eAbstractionObserver]: Analyzing ICFG xor1.i [2021-11-25 20:42:56,818 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:42:56,818 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:42:56,939 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:42:56,948 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 20:42:56,963 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:42:56,997 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 20:42:57,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 20:42:57,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:42:57,016 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 20:42:57,017 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:42:57,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:42:57,024 INFO L85 PathProgramCache]: Analyzing trace with hash -141219973, now seen corresponding path program 1 times [2021-11-25 20:42:57,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:42:57,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317176838] [2021-11-25 20:42:57,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:42:57,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:42:57,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:42:57,043 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:42:57,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 20:42:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:42:57,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:42:57,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:42:57,354 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 20:42:57,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:42:57,356 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:42:57,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1317176838] [2021-11-25 20:42:57,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1317176838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:42:57,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:42:57,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:42:57,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429759363] [2021-11-25 20:42:57,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:42:57,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:42:57,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:42:57,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:42:57,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:42:57,405 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 20:42:57,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:42:57,443 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2021-11-25 20:42:57,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:42:57,447 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 20:42:57,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:42:57,456 INFO L225 Difference]: With dead ends: 50 [2021-11-25 20:42:57,457 INFO L226 Difference]: Without dead ends: 24 [2021-11-25 20:42:57,461 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 20:42:57,466 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 20:42:57,468 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 20:42:57,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-25 20:42:57,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-11-25 20:42:57,512 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 20:42:57,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-11-25 20:42:57,515 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 28 [2021-11-25 20:42:57,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:42:57,516 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-11-25 20:42:57,517 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 20:42:57,517 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-11-25 20:42:57,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 20:42:57,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:42:57,520 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 20:42:57,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:42:57,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:42:57,733 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:42:57,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:42:57,734 INFO L85 PathProgramCache]: Analyzing trace with hash -618478211, now seen corresponding path program 1 times [2021-11-25 20:42:57,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:42:57,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426647169] [2021-11-25 20:42:57,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:42:57,736 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:42:57,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:42:57,740 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:42:57,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 20:42:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:42:57,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:42:57,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:42:57,980 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 20:42:57,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:42:58,114 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 20:42:58,114 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:42:58,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426647169] [2021-11-25 20:42:58,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426647169] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:42:58,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1891649352] [2021-11-25 20:42:58,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:42:58,121 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:42:58,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:42:58,127 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:42:58,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-25 20:42:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:42:58,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:42:58,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:42:58,350 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 20:42:58,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:42:58,422 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 20:42:58,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1891649352] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:42:58,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839249046] [2021-11-25 20:42:58,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:42:58,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:42:58,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:42:58,432 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:42:58,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 20:42:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:42:58,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:42:58,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:42:58,616 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 20:42:58,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:42:58,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839249046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:42:58,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2021-11-25 20:42:58,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4, 4, 4] total 7 [2021-11-25 20:42:58,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606289042] [2021-11-25 20:42:58,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:42:58,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:42:58,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:42:58,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:42:58,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:42:58,623 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 20:42:58,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:42:58,648 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2021-11-25 20:42:58,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:42:58,650 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 20:42:58,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:42:58,652 INFO L225 Difference]: With dead ends: 42 [2021-11-25 20:42:58,652 INFO L226 Difference]: Without dead ends: 25 [2021-11-25 20:42:58,655 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 20:42:58,658 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 20:42:58,659 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 20:42:58,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-25 20:42:58,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-11-25 20:42:58,671 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 20:42:58,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-11-25 20:42:58,675 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 30 [2021-11-25 20:42:58,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:42:58,677 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-11-25 20:42:58,678 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 20:42:58,678 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-11-25 20:42:58,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 20:42:58,681 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:42:58,681 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 20:42:58,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 20:42:58,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:42:59,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:42:59,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 20:42:59,296 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:42:59,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:42:59,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1511029509, now seen corresponding path program 1 times [2021-11-25 20:42:59,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:42:59,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693169233] [2021-11-25 20:42:59,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:42:59,299 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:42:59,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:42:59,301 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:42:59,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-25 20:42:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:42:59,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:42:59,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:42:59,505 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 20:42:59,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:42:59,618 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 20:42:59,618 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:42:59,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693169233] [2021-11-25 20:42:59,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693169233] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:42:59,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2142099678] [2021-11-25 20:42:59,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:42:59,620 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:42:59,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:42:59,624 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:42:59,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-25 20:42:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:42:59,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:42:59,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:42:59,835 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 20:42:59,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:42:59,899 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 20:42:59,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2142099678] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:42:59,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024936943] [2021-11-25 20:42:59,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:42:59,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:42:59,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:42:59,904 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:42:59,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 20:42:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:42:59,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:42:59,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:43:00,073 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 20:43:00,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:43:00,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024936943] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:43:00,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2021-11-25 20:43:00,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4, 4, 4] total 7 [2021-11-25 20:43:00,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893901184] [2021-11-25 20:43:00,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:43:00,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:43:00,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:43:00,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:43:00,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:43:00,077 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 20:43:00,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:43:00,105 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2021-11-25 20:43:00,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:43:00,107 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 20:43:00,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:43:00,109 INFO L225 Difference]: With dead ends: 39 [2021-11-25 20:43:00,109 INFO L226 Difference]: Without dead ends: 26 [2021-11-25 20:43:00,111 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 20:43:00,114 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 20:43:00,121 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 20:43:00,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-25 20:43:00,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-11-25 20:43:00,132 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 20:43:00,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-11-25 20:43:00,133 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 36 [2021-11-25 20:43:00,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:43:00,135 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-11-25 20:43:00,135 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 20:43:00,135 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-11-25 20:43:00,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:43:00,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:43:00,141 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 20:43:00,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-25 20:43:00,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-25 20:43:00,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-25 20:43:00,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:43:00,748 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:43:00,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:43:00,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1553738215, now seen corresponding path program 1 times [2021-11-25 20:43:00,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:43:00,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088271647] [2021-11-25 20:43:00,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:43:00,753 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:43:00,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:43:00,754 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:43:00,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-25 20:43:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:43:00,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:43:00,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:43:00,945 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 20:43:00,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:43:01,037 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 20:43:01,037 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:43:01,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088271647] [2021-11-25 20:43:01,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088271647] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:43:01,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1789737778] [2021-11-25 20:43:01,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:43:01,038 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:43:01,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:43:01,044 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:43:01,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-25 20:43:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:43:01,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:43:01,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:43:01,244 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 20:43:01,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:43:01,327 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 20:43:01,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1789737778] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:43:01,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194361443] [2021-11-25 20:43:01,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:43:01,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:43:01,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:43:01,329 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:43:01,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 20:43:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:43:01,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:43:01,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:43:01,502 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 20:43:01,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:43:01,594 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 20:43:01,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194361443] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:43:01,594 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 20:43:01,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 10 [2021-11-25 20:43:01,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434738493] [2021-11-25 20:43:01,595 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 20:43:01,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 20:43:01,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:43:01,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 20:43:01,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-25 20:43:01,597 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 20:43:01,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:43:01,760 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2021-11-25 20:43:01,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 20:43:01,761 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 20:43:01,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:43:01,762 INFO L225 Difference]: With dead ends: 57 [2021-11-25 20:43:01,762 INFO L226 Difference]: Without dead ends: 37 [2021-11-25 20:43:01,763 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 20:43:01,764 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 20:43:01,764 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 20:43:01,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-25 20:43:01,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-11-25 20:43:01,771 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 20:43:01,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-11-25 20:43:01,772 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 38 [2021-11-25 20:43:01,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:43:01,772 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-11-25 20:43:01,773 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 20:43:01,773 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-11-25 20:43:01,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-25 20:43:01,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:43:01,775 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 20:43:01,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-25 20:43:01,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-25 20:43:02,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 20:43:02,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:43:02,377 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:43:02,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:43:02,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1298280697, now seen corresponding path program 2 times [2021-11-25 20:43:02,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:43:02,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176441582] [2021-11-25 20:43:02,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 20:43:02,379 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:43:02,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:43:02,394 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:43:02,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-25 20:43:02,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 20:43:02,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:43:02,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 20:43:02,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:43:02,588 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 20:43:02,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:43:02,774 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 20:43:02,774 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:43:02,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176441582] [2021-11-25 20:43:02,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1176441582] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:43:02,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1351264684] [2021-11-25 20:43:02,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 20:43:02,775 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:43:02,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:43:02,780 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:43:02,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-25 20:43:02,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 20:43:02,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:43:02,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 20:43:02,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:43:03,042 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 20:43:03,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:43:03,144 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 20:43:03,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1351264684] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:43:03,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12158395] [2021-11-25 20:43:03,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 20:43:03,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:43:03,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:43:03,146 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:43:03,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-25 20:43:03,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 20:43:03,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:43:03,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:43:03,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:43:03,366 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 20:43:03,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:43:03,508 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 20:43:03,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12158395] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:43:03,508 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 20:43:03,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 4, 4] total 16 [2021-11-25 20:43:03,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795508106] [2021-11-25 20:43:03,509 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 20:43:03,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 20:43:03,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:43:03,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 20:43:03,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-11-25 20:43:03,511 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 20:43:03,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:43:03,876 INFO L93 Difference]: Finished difference Result 81 states and 100 transitions. [2021-11-25 20:43:03,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 20:43:03,878 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 20:43:03,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:43:03,880 INFO L225 Difference]: With dead ends: 81 [2021-11-25 20:43:03,881 INFO L226 Difference]: Without dead ends: 55 [2021-11-25 20:43:03,881 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 20:43:03,884 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, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:43:03,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 162 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:43:03,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-25 20:43:03,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-11-25 20:43:03,896 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 20:43:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-11-25 20:43:03,897 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 50 [2021-11-25 20:43:03,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:43:03,898 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-11-25 20:43:03,898 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 20:43:03,898 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-11-25 20:43:03,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 20:43:03,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:43:03,907 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 20:43:03,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-25 20:43:04,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-25 20:43:04,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-25 20:43:04,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:43:04,516 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:43:04,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:43:04,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1940012673, now seen corresponding path program 3 times [2021-11-25 20:43:04,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:43:04,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858796691] [2021-11-25 20:43:04,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:43:04,517 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:43:04,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:43:04,523 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:43:04,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-25 20:43:04,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 20:43:04,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:43:04,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 20:43:04,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:43:04,845 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 20:43:04,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:43:05,075 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 20:43:05,075 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:43:05,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858796691] [2021-11-25 20:43:05,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858796691] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:43:05,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1903933271] [2021-11-25 20:43:05,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:43:05,076 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:43:05,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:43:05,077 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:43:05,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-25 20:43:05,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 20:43:05,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:43:05,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 20:43:05,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:43:05,503 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 20:43:05,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:43:05,642 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 20:43:05,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1903933271] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:43:05,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573950992] [2021-11-25 20:43:05,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:43:05,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:43:05,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:43:05,644 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:43:05,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-25 20:43:05,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 20:43:05,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:43:05,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 20:43:05,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:43:06,054 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 20:43:06,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:43:06,432 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 20:43:06,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573950992] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:43:06,432 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 20:43:06,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 8] total 16 [2021-11-25 20:43:06,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644219124] [2021-11-25 20:43:06,433 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 20:43:06,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 20:43:06,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:43:06,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 20:43:06,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-11-25 20:43:06,436 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 20:43:06,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:43:06,845 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2021-11-25 20:43:06,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 20:43:06,846 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 20:43:06,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:43:06,848 INFO L225 Difference]: With dead ends: 98 [2021-11-25 20:43:06,848 INFO L226 Difference]: Without dead ends: 67 [2021-11-25 20:43:06,849 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 20:43:06,850 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 20:43:06,851 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 20:43:06,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-25 20:43:06,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-11-25 20:43:06,859 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 20:43:06,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2021-11-25 20:43:06,862 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 80 [2021-11-25 20:43:06,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:43:06,862 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2021-11-25 20:43:06,863 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 20:43:06,863 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2021-11-25 20:43:06,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-25 20:43:06,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:43:06,874 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 20:43:06,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2021-11-25 20:43:07,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-25 20:43:07,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-25 20:43:07,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:43:07,478 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:43:07,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:43:07,479 INFO L85 PathProgramCache]: Analyzing trace with hash -690963469, now seen corresponding path program 4 times [2021-11-25 20:43:07,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:43:07,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238505489] [2021-11-25 20:43:07,480 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 20:43:07,480 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:43:07,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:43:07,487 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:43:07,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-25 20:43:07,659 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 20:43:07,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:43:07,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 20:43:07,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:43:07,920 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 20:43:07,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:43:08,536 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 20:43:08,536 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:43:08,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238505489] [2021-11-25 20:43:08,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238505489] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:43:08,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1087229778] [2021-11-25 20:43:08,537 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 20:43:08,537 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:43:08,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:43:08,540 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:43:08,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-25 20:43:08,868 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 20:43:08,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:43:08,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 20:43:08,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:43:09,090 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 20:43:09,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:43:09,331 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 20:43:09,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1087229778] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:43:09,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596105114] [2021-11-25 20:43:09,331 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 20:43:09,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:43:09,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:43:09,333 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:43:09,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-25 20:43:09,504 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 20:43:09,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:43:09,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 20:43:09,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:43:10,073 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 20:43:10,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:43:11,524 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 20:43:11,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596105114] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:43:11,525 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 20:43:11,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 13, 14] total 47 [2021-11-25 20:43:11,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766758225] [2021-11-25 20:43:11,526 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 20:43:11,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-25 20:43:11,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:43:11,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-25 20:43:11,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1817, Unknown=0, NotChecked=0, Total=2162 [2021-11-25 20:43:11,530 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 20:43:15,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:43:15,854 INFO L93 Difference]: Finished difference Result 159 states and 193 transitions. [2021-11-25 20:43:15,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-25 20:43:15,855 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 20:43:15,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:43:15,857 INFO L225 Difference]: With dead ends: 159 [2021-11-25 20:43:15,857 INFO L226 Difference]: Without dead ends: 115 [2021-11-25 20:43:15,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 645 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=859, Invalid=3697, Unknown=0, NotChecked=0, Total=4556 [2021-11-25 20:43:15,861 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 86 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:43:15,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 596 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 20:43:15,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-25 20:43:15,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-11-25 20:43:15,872 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 20:43:15,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2021-11-25 20:43:15,875 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 116 [2021-11-25 20:43:15,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:43:15,875 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2021-11-25 20:43:15,876 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 20:43:15,876 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2021-11-25 20:43:15,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-25 20:43:15,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:43:15,879 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 20:43:15,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-25 20:43:16,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-25 20:43:16,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-25 20:43:16,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 20:43:16,493 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:43:16,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:43:16,493 INFO L85 PathProgramCache]: Analyzing trace with hash 2103912947, now seen corresponding path program 5 times [2021-11-25 20:43:16,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:43:16,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329192566] [2021-11-25 20:43:16,494 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-25 20:43:16,495 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:43:16,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:43:16,496 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:43:16,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-25 20:43:18,571 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2021-11-25 20:43:18,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:43:18,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-25 20:43:18,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:43:19,197 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 20:43:19,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:43:21,661 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 20:43:21,661 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:43:21,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329192566] [2021-11-25 20:43:21,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329192566] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:43:21,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [952324813] [2021-11-25 20:43:21,662 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-25 20:43:21,662 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:43:21,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:43:21,669 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:43:21,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4cab0d-14bb-4549-8bcc-ce283fcbc51a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process