./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-crafted/xor1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/xor1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa90627ffc045ef90595d49d60ca0f6095b53b667a9d0f028eb93e7bf4c6c579 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:49:44,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:49:44,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:49:44,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:49:44,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:49:44,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:49:44,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:49:44,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:49:44,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:49:44,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:49:44,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:49:44,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:49:44,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:49:44,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:49:44,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:49:44,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:49:44,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:49:44,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:49:44,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:49:44,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:49:44,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:49:44,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:49:44,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:49:44,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:49:44,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:49:44,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:49:44,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:49:44,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:49:44,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:49:44,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:49:44,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:49:44,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:49:44,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:49:44,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:49:44,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:49:44,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:49:44,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:49:44,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:49:44,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:49:44,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:49:44,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:49:44,655 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 02:49:44,676 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:49:44,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:49:44,677 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:49:44,677 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:49:44,678 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:49:44,678 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:49:44,678 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:49:44,678 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:49:44,679 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:49:44,679 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:49:44,686 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:49:44,686 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:49:44,687 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:49:44,687 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:49:44,687 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:49:44,687 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:49:44,688 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:49:44,688 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:49:44,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:49:44,689 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:49:44,689 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 02:49:44,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:49:44,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:49:44,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:49:44,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:49:44,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:49:44,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:49:44,691 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 02:49:44,691 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:49:44,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:49:44,692 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:49:44,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:49:44,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:49:44,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:49:44,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:49:44,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:49:44,693 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:49:44,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:49:44,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:49:44,694 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:49:44,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:49:44,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:49:44,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:49:44,695 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa90627ffc045ef90595d49d60ca0f6095b53b667a9d0f028eb93e7bf4c6c579 [2022-11-22 02:49:45,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:49:45,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:49:45,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:49:45,048 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:49:45,048 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:49:45,049 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/array-crafted/xor1.i [2022-11-22 02:49:47,994 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:49:48,277 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:49:48,278 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/sv-benchmarks/c/array-crafted/xor1.i [2022-11-22 02:49:48,284 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/data/850c570ed/75d9b321a87e4bc3aa147f8826765880/FLAG6175c9c81 [2022-11-22 02:49:48,305 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/data/850c570ed/75d9b321a87e4bc3aa147f8826765880 [2022-11-22 02:49:48,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:49:48,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:49:48,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:49:48,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:49:48,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:49:48,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:49:48" (1/1) ... [2022-11-22 02:49:48,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d34692a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:48, skipping insertion in model container [2022-11-22 02:49:48,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:49:48" (1/1) ... [2022-11-22 02:49:48,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:49:48,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:49:48,541 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/sv-benchmarks/c/array-crafted/xor1.i[1285,1298] [2022-11-22 02:49:48,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:49:48,551 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:49:48,602 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/sv-benchmarks/c/array-crafted/xor1.i[1285,1298] [2022-11-22 02:49:48,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:49:48,621 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:49:48,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:48 WrapperNode [2022-11-22 02:49:48,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:49:48,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:49:48,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:49:48,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:49:48,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:48" (1/1) ... [2022-11-22 02:49:48,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:48" (1/1) ... [2022-11-22 02:49:48,678 INFO L138 Inliner]: procedures = 16, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2022-11-22 02:49:48,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:49:48,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:49:48,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:49:48,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:49:48,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:48" (1/1) ... [2022-11-22 02:49:48,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:48" (1/1) ... [2022-11-22 02:49:48,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:48" (1/1) ... [2022-11-22 02:49:48,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:48" (1/1) ... [2022-11-22 02:49:48,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:48" (1/1) ... [2022-11-22 02:49:48,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:48" (1/1) ... [2022-11-22 02:49:48,726 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:48" (1/1) ... [2022-11-22 02:49:48,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:48" (1/1) ... [2022-11-22 02:49:48,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:49:48,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:49:48,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:49:48,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:49:48,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:48" (1/1) ... [2022-11-22 02:49:48,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:49:48,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:49:48,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:49:48,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:49:48,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:49:48,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:49:48,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:49:48,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:49:48,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:49:48,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:49:48,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:49:48,828 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2022-11-22 02:49:48,828 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2022-11-22 02:49:48,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:49:48,935 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:49:48,938 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:49:49,146 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:49:49,234 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:49:49,235 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-22 02:49:49,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:49:49 BoogieIcfgContainer [2022-11-22 02:49:49,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:49:49,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:49:49,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:49:49,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:49:49,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:49:48" (1/3) ... [2022-11-22 02:49:49,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200663cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:49:49, skipping insertion in model container [2022-11-22 02:49:49,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:48" (2/3) ... [2022-11-22 02:49:49,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200663cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:49:49, skipping insertion in model container [2022-11-22 02:49:49,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:49:49" (3/3) ... [2022-11-22 02:49:49,246 INFO L112 eAbstractionObserver]: Analyzing ICFG xor1.i [2022-11-22 02:49:49,265 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:49:49,266 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-22 02:49:49,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:49:49,361 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3a014830, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:49:49,361 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-22 02:49:49,365 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 16 states have (on average 1.6875) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 02:49:49,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 02:49:49,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:49,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 02:49:49,374 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:49:49,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:49,395 INFO L85 PathProgramCache]: Analyzing trace with hash 131918, now seen corresponding path program 1 times [2022-11-22 02:49:49,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:49,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115697138] [2022-11-22 02:49:49,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:49,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:49,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:49,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:49,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115697138] [2022-11-22 02:49:49,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115697138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:49,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:49,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:49:49,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990505860] [2022-11-22 02:49:49,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:49,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:49:49,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:49,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:49:49,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:49:49,734 INFO L87 Difference]: Start difference. First operand has 29 states, 16 states have (on average 1.6875) internal successors, (27), 24 states have internal predecessors, (27), 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 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:49,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:49,822 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2022-11-22 02:49:49,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:49:49,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-22 02:49:49,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:49,837 INFO L225 Difference]: With dead ends: 57 [2022-11-22 02:49:49,837 INFO L226 Difference]: Without dead ends: 30 [2022-11-22 02:49:49,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:49:49,844 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:49,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 68 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:49:49,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-22 02:49:49,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-22 02:49:49,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.6111111111111112) 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, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 02:49:49,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-11-22 02:49:49,890 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 3 [2022-11-22 02:49:49,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:49,891 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-11-22 02:49:49,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:49,891 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-11-22 02:49:49,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 02:49:49,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:49,892 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-22 02:49:49,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:49:49,893 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:49:49,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:49,894 INFO L85 PathProgramCache]: Analyzing trace with hash -364949847, now seen corresponding path program 1 times [2022-11-22 02:49:49,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:49,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691675213] [2022-11-22 02:49:49,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:49,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:50,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:49:50,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:50,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691675213] [2022-11-22 02:49:50,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691675213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:50,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:50,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:49:50,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119192240] [2022-11-22 02:49:50,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:50,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:49:50,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:50,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:49:50,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:49:50,049 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:50,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:50,092 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-11-22 02:49:50,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:49:50,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-22 02:49:50,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:50,094 INFO L225 Difference]: With dead ends: 30 [2022-11-22 02:49:50,094 INFO L226 Difference]: Without dead ends: 29 [2022-11-22 02:49:50,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:49:50,096 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 2 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:50,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 40 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:49:50,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-22 02:49:50,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-22 02:49:50,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 25 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 02:49:50,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-11-22 02:49:50,102 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 6 [2022-11-22 02:49:50,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:50,103 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-11-22 02:49:50,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:50,103 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-11-22 02:49:50,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 02:49:50,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:50,104 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2022-11-22 02:49:50,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:49:50,104 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:49:50,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:50,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1571456677, now seen corresponding path program 1 times [2022-11-22 02:49:50,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:50,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326219826] [2022-11-22 02:49:50,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:50,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:50,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:50,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:50,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326219826] [2022-11-22 02:49:50,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326219826] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:49:50,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976395446] [2022-11-22 02:49:50,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:50,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:49:50,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:49:50,278 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:49:50,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:49:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:50,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 02:49:50,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:49:50,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:50,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:49:50,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976395446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:50,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:49:50,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-22 02:49:50,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882677271] [2022-11-22 02:49:50,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:50,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:49:50,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:50,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:49:50,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:49:50,483 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:50,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:50,575 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-11-22 02:49:50,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:49:50,576 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 02:49:50,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:50,577 INFO L225 Difference]: With dead ends: 29 [2022-11-22 02:49:50,577 INFO L226 Difference]: Without dead ends: 28 [2022-11-22 02:49:50,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-22 02:49:50,579 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 17 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:50,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 56 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:49:50,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-22 02:49:50,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2022-11-22 02:49:50,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.5625) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 02:49:50,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-11-22 02:49:50,586 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 7 [2022-11-22 02:49:50,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:50,587 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-11-22 02:49:50,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:50,587 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-11-22 02:49:50,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 02:49:50,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:50,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:49:50,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:49:50,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:49:50,790 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting xorErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:49:50,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:50,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1647851644, now seen corresponding path program 1 times [2022-11-22 02:49:50,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:50,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746003339] [2022-11-22 02:49:50,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:50,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:50,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:50,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:50,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746003339] [2022-11-22 02:49:50,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746003339] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:49:50,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113694746] [2022-11-22 02:49:50,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:50,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:49:50,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:49:50,952 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:49:50,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:49:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:51,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:49:51,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:49:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:51,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:49:51,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:51,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113694746] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:49:51,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1231633098] [2022-11-22 02:49:51,112 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 02:49:51,112 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:49:51,121 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:49:51,128 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:49:51,129 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:49:51,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,263 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 02:49:51,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 02:49:51,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-22 02:49:51,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,359 INFO L350 Elim1Store]: Elim1 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 79 treesize of output 102 [2022-11-22 02:49:51,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 25 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 122 [2022-11-22 02:49:51,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,823 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:51,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,832 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:51,863 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-22 02:49:51,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 28 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 20 case distinctions, treesize of input 319 treesize of output 300 [2022-11-22 02:49:52,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-22 02:49:52,051 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2022-11-22 02:49:52,087 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:49:52,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1231633098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:52,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:49:52,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 16 [2022-11-22 02:49:52,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658009732] [2022-11-22 02:49:52,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:52,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 02:49:52,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:52,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 02:49:52,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:49:52,598 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:52,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:52,920 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2022-11-22 02:49:52,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:49:52,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-22 02:49:52,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:52,922 INFO L225 Difference]: With dead ends: 49 [2022-11-22 02:49:52,922 INFO L226 Difference]: Without dead ends: 29 [2022-11-22 02:49:52,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-11-22 02:49:52,925 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:52,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 37 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:49:52,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-22 02:49:52,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-22 02:49:52,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 25 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 02:49:52,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-11-22 02:49:52,933 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 9 [2022-11-22 02:49:52,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:52,933 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-11-22 02:49:52,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:52,938 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-11-22 02:49:52,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 02:49:52,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:52,940 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:49:52,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:49:53,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:49:53,146 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting xorErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:49:53,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:53,147 INFO L85 PathProgramCache]: Analyzing trace with hash 327986064, now seen corresponding path program 1 times [2022-11-22 02:49:53,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:53,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337958414] [2022-11-22 02:49:53,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:53,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:53,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:49:53,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:53,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337958414] [2022-11-22 02:49:53,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337958414] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:49:53,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033345765] [2022-11-22 02:49:53,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:53,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:49:53,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:49:53,271 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:49:53,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:49:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:53,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:49:53,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:49:53,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:49:53,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:49:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:49:53,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033345765] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:49:53,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1617256046] [2022-11-22 02:49:53,405 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:49:53,405 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:49:53,405 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:49:53,406 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:49:53,406 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:49:53,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:53,438 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-22 02:49:53,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-22 02:49:53,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:53,471 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 02:49:53,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 02:49:53,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:53,504 INFO L350 Elim1Store]: Elim1 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 79 treesize of output 102 [2022-11-22 02:49:53,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:53,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:53,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 25 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 117 [2022-11-22 02:49:53,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:53,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:53,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:53,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:53,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:53,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:53,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:53,754 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:53,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:53,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:53,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:53,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:53,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:53,785 INFO L321 Elim1Store]: treesize reduction 107, result has 6.1 percent of original size [2022-11-22 02:49:53,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 33 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 20 case distinctions, treesize of input 335 treesize of output 297 [2022-11-22 02:49:53,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-22 02:49:53,888 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2022-11-22 02:49:54,164 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:49:54,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1617256046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:54,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:49:54,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 16 [2022-11-22 02:49:54,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179764462] [2022-11-22 02:49:54,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:54,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 02:49:54,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:54,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 02:49:54,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:49:54,615 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:54,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:54,918 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-11-22 02:49:54,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:49:54,919 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-22 02:49:54,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:54,919 INFO L225 Difference]: With dead ends: 29 [2022-11-22 02:49:54,920 INFO L226 Difference]: Without dead ends: 26 [2022-11-22 02:49:54,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-11-22 02:49:54,921 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:54,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 43 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:49:54,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-22 02:49:54,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-11-22 02:49:54,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 02:49:54,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-11-22 02:49:54,928 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 12 [2022-11-22 02:49:54,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:54,929 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-11-22 02:49:54,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:54,929 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-11-22 02:49:54,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-22 02:49:54,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:54,930 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:49:54,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:49:55,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:49:55,135 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:49:55,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:55,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1764035170, now seen corresponding path program 1 times [2022-11-22 02:49:55,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:55,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79870718] [2022-11-22 02:49:55,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:55,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:55,222 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-22 02:49:55,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:55,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79870718] [2022-11-22 02:49:55,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79870718] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:49:55,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076325661] [2022-11-22 02:49:55,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:55,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:49:55,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:49:55,225 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:49:55,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:49:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:55,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:49:55,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:49:55,319 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 02:49:55,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:49:55,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076325661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:55,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:49:55,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 02:49:55,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195703104] [2022-11-22 02:49:55,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:55,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:49:55,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:55,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:49:55,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:49:55,322 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 02:49:55,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:55,363 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-11-22 02:49:55,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:49:55,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-11-22 02:49:55,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:55,365 INFO L225 Difference]: With dead ends: 32 [2022-11-22 02:49:55,365 INFO L226 Difference]: Without dead ends: 31 [2022-11-22 02:49:55,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:49:55,366 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:55,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 29 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:49:55,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-22 02:49:55,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2022-11-22 02:49:55,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 22 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 02:49:55,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-11-22 02:49:55,373 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 23 [2022-11-22 02:49:55,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:55,374 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-11-22 02:49:55,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 02:49:55,375 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-11-22 02:49:55,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-22 02:49:55,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:55,375 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:49:55,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 02:49:55,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:49:55,581 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:49:55,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:55,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1149484643, now seen corresponding path program 1 times [2022-11-22 02:49:55,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:55,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898134860] [2022-11-22 02:49:55,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:55,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:55,714 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-22 02:49:55,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:55,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898134860] [2022-11-22 02:49:55,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898134860] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:49:55,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233287112] [2022-11-22 02:49:55,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:55,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:49:55,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:49:55,717 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:49:55,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 02:49:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:55,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:49:55,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:49:55,806 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 02:49:55,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:49:55,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233287112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:55,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:49:55,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 02:49:55,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695406011] [2022-11-22 02:49:55,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:55,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:49:55,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:55,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:49:55,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:49:55,809 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 02:49:55,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:55,841 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-11-22 02:49:55,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:49:55,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-11-22 02:49:55,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:55,843 INFO L225 Difference]: With dead ends: 32 [2022-11-22 02:49:55,844 INFO L226 Difference]: Without dead ends: 31 [2022-11-22 02:49:55,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:49:55,845 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:55,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 30 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:49:55,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-22 02:49:55,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2022-11-22 02:49:55,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.3) internal successors, (26), 23 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 02:49:55,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-11-22 02:49:55,855 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 24 [2022-11-22 02:49:55,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:55,856 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-11-22 02:49:55,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 02:49:55,856 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-11-22 02:49:55,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-22 02:49:55,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:55,857 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:49:55,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:49:56,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:49:56,067 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:49:56,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:56,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1274287711, now seen corresponding path program 1 times [2022-11-22 02:49:56,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:56,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802221521] [2022-11-22 02:49:56,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:56,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:56,152 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-22 02:49:56,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:56,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802221521] [2022-11-22 02:49:56,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802221521] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:49:56,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131128896] [2022-11-22 02:49:56,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:56,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:49:56,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:49:56,155 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:49:56,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 02:49:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:56,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:49:56,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:49:56,251 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-22 02:49:56,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:49:56,289 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-22 02:49:56,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131128896] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:49:56,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [182994870] [2022-11-22 02:49:56,295 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-22 02:49:56,295 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:49:56,296 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:49:56,296 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:49:56,296 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:49:56,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:56,341 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 02:49:56,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 02:49:56,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:56,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-22 02:49:56,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:56,383 INFO L350 Elim1Store]: Elim1 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 79 treesize of output 102 [2022-11-22 02:49:56,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:56,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 25 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 122 [2022-11-22 02:49:56,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:56,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:56,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:56,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:56,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:56,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:56,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:56,625 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:56,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:56,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:56,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:56,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:56,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:56,632 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:56,663 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-22 02:49:56,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 27 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 20 case distinctions, treesize of input 319 treesize of output 300 [2022-11-22 02:49:56,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-22 02:49:56,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:56,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-22 02:49:57,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:57,083 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:57,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-22 02:49:57,110 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2022-11-22 02:49:57,297 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:49:58,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [182994870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:58,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:49:58,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [5, 4, 5] total 23 [2022-11-22 02:49:58,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302402077] [2022-11-22 02:49:58,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:58,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 02:49:58,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:58,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 02:49:58,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-11-22 02:49:58,223 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 15 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 02:49:58,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:58,621 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-11-22 02:49:58,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:49:58,621 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-11-22 02:49:58,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:58,622 INFO L225 Difference]: With dead ends: 31 [2022-11-22 02:49:58,622 INFO L226 Difference]: Without dead ends: 29 [2022-11-22 02:49:58,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:49:58,624 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 40 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:58,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 32 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:49:58,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-22 02:49:58,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-22 02:49:58,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 25 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 02:49:58,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-11-22 02:49:58,630 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 25 [2022-11-22 02:49:58,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:58,630 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-11-22 02:49:58,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 02:49:58,631 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-11-22 02:49:58,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-22 02:49:58,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:58,632 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:49:58,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-22 02:49:58,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:49:58,837 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:49:58,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:58,838 INFO L85 PathProgramCache]: Analyzing trace with hash -910660758, now seen corresponding path program 1 times [2022-11-22 02:49:58,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:58,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621524722] [2022-11-22 02:49:58,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:58,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:58,944 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 02:49:58,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:58,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621524722] [2022-11-22 02:49:58,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621524722] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:49:58,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274105373] [2022-11-22 02:49:58,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:58,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:49:58,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:49:58,947 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:49:58,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 02:49:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:59,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:49:59,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:49:59,036 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 02:49:59,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:49:59,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274105373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:59,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:49:59,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 02:49:59,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104179402] [2022-11-22 02:49:59,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:59,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:49:59,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:59,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:49:59,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:49:59,039 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 02:49:59,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:59,063 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-11-22 02:49:59,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:49:59,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-11-22 02:49:59,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:59,065 INFO L225 Difference]: With dead ends: 29 [2022-11-22 02:49:59,065 INFO L226 Difference]: Without dead ends: 28 [2022-11-22 02:49:59,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:49:59,066 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:59,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 25 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:49:59,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-22 02:49:59,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-22 02:49:59,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 24 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 02:49:59,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-11-22 02:49:59,072 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 28 [2022-11-22 02:49:59,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:59,073 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-11-22 02:49:59,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 02:49:59,073 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-11-22 02:49:59,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-22 02:49:59,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:59,074 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:49:59,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 02:49:59,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-22 02:49:59,279 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:49:59,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:59,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1834287639, now seen corresponding path program 1 times [2022-11-22 02:49:59,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:59,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10792870] [2022-11-22 02:49:59,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:59,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:59,347 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-22 02:49:59,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:59,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10792870] [2022-11-22 02:49:59,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10792870] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:49:59,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121299789] [2022-11-22 02:49:59,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:59,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:49:59,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:49:59,349 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:49:59,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 02:49:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:59,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:49:59,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:49:59,444 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-22 02:49:59,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:49:59,475 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-22 02:49:59,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121299789] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:49:59,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [709964873] [2022-11-22 02:49:59,478 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-22 02:49:59,478 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:49:59,479 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:49:59,479 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:49:59,479 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:49:59,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:59,511 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 02:49:59,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 02:49:59,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:59,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-22 02:49:59,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:59,544 INFO L350 Elim1Store]: Elim1 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 79 treesize of output 102 [2022-11-22 02:49:59,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:59,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:59,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 25 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 117 [2022-11-22 02:49:59,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:59,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:59,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:59,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:59,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:59,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:59,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:59,758 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:59,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:59,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:59,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:59,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:59,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:59,790 INFO L321 Elim1Store]: treesize reduction 107, result has 6.1 percent of original size [2022-11-22 02:49:59,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 33 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 20 case distinctions, treesize of input 335 treesize of output 297 [2022-11-22 02:49:59,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-22 02:49:59,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:59,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-22 02:50:00,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:00,097 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:50:00,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-22 02:50:00,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2022-11-22 02:50:00,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:00,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:00,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:00,215 INFO L321 Elim1Store]: treesize reduction 47, result has 35.6 percent of original size [2022-11-22 02:50:00,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 89 [2022-11-22 02:50:00,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-22 02:50:00,378 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2022-11-22 02:50:00,536 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:50:01,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [709964873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:50:01,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:50:01,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [5, 4, 5] total 25 [2022-11-22 02:50:01,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902275756] [2022-11-22 02:50:01,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:50:01,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 02:50:01,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:01,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 02:50:01,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2022-11-22 02:50:01,977 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 17 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 02:50:02,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:02,353 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-11-22 02:50:02,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:50:02,353 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-11-22 02:50:02,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:02,354 INFO L225 Difference]: With dead ends: 28 [2022-11-22 02:50:02,354 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 02:50:02,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2022-11-22 02:50:02,355 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:02,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:50:02,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 02:50:02,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 02:50:02,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:02,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 02:50:02,356 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2022-11-22 02:50:02,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:02,356 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 02:50:02,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 02:50:02,357 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 02:50:02,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 02:50:02,363 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2022-11-22 02:50:02,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2022-11-22 02:50:02,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-11-22 02:50:02,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-11-22 02:50:02,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-11-22 02:50:02,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2022-11-22 02:50:02,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location xorErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-11-22 02:50:02,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location xorErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-11-22 02:50:02,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 02:50:02,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 02:50:02,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-22 02:50:03,013 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 47) no Hoare annotation was computed. [2022-11-22 02:50:03,014 INFO L895 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~i~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 4 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0)) [2022-11-22 02:50:03,014 INFO L899 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2022-11-22 02:50:03,014 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 37) no Hoare annotation was computed. [2022-11-22 02:50:03,014 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-22 02:50:03,014 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2022-11-22 02:50:03,014 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2022-11-22 02:50:03,015 INFO L899 garLoopResultBuilder]: For program point L37-3(line 37) no Hoare annotation was computed. [2022-11-22 02:50:03,015 INFO L899 garLoopResultBuilder]: For program point L37-4(line 37) no Hoare annotation was computed. [2022-11-22 02:50:03,015 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 37) no Hoare annotation was computed. [2022-11-22 02:50:03,015 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-22 02:50:03,015 INFO L895 garLoopResultBuilder]: At program point L37-5(lines 37 39) the Hoare annotation is: (let ((.cse1 (= |ULTIMATE.start_main_~#x~0#1.offset| 0)) (.cse2 (= |#NULL.offset| 0)) (.cse4 (= |#NULL.base| 0))) (or (let ((.cse0 (select |#memory_int| 2)) (.cse3 (select |#memory_int| 1))) (and (= 7 (select |#length| 2)) (= (select .cse0 0) 120) (= 114 (select .cse0 2)) (= (select .cse0 5) 99) (= |ULTIMATE.start_main_~i~1#1| 0) (= 2 (select |#length| 1)) (= 111 (select .cse0 1)) (= (select |#valid| |ULTIMATE.start_main_~#x~0#1.base|) 1) (= (select .cse0 4) 46) .cse1 (= (select |#valid| 1) 1) (= (select .cse0 6) 0) (= 400 (select |#length| |ULTIMATE.start_main_~#x~0#1.base|)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) .cse2 (= (select .cse3 0) 48) (= 49 (select .cse0 3)) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#x~0#1.base|) (= (select .cse3 1) 0) (< 0 |#StackHeapBarrier|) .cse4)) (and (<= |ULTIMATE.start_main_~i~1#1| 2147483647) .cse1 (<= 1 |ULTIMATE.start_main_~i~1#1|) .cse2 (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) .cse4))) [2022-11-22 02:50:03,016 INFO L895 garLoopResultBuilder]: At program point L37-6(lines 37 39) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~i~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0)) [2022-11-22 02:50:03,016 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2022-11-22 02:50:03,016 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~i~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0)) [2022-11-22 02:50:03,016 INFO L902 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: true [2022-11-22 02:50:03,016 INFO L899 garLoopResultBuilder]: For program point L46-3(line 46) no Hoare annotation was computed. [2022-11-22 02:50:03,016 INFO L899 garLoopResultBuilder]: For program point L46-4(line 46) no Hoare annotation was computed. [2022-11-22 02:50:03,017 INFO L895 garLoopResultBuilder]: At program point L46-5(lines 46 48) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~i~2#1|))) (and (or .cse0 (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) |ULTIMATE.start_main_~#x~0#1.offset|) |ULTIMATE.start_main_~temp~0#1|)) (let ((.cse1 (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647)) (.cse2 (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|)) (.cse3 (<= |#NULL.offset| 0)) (.cse4 (<= |ULTIMATE.start_main_~i~1#1| 2147483647)) (.cse5 (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648))) (.cse6 (<= 0 |ULTIMATE.start_main_~#x~0#1.base|)) (.cse7 (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648))) (.cse8 (<= 0 |#NULL.offset|)) (.cse9 (<= |ULTIMATE.start_main_~#x~0#1.offset| 0))) (or (and .cse1 (<= |ULTIMATE.start_main_~i~2#1| 0) .cse2 (<= 0 |ULTIMATE.start_main_~i~2#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse0 (<= |ULTIMATE.start_main_~i~2#1| 2147483647) .cse6 .cse7 .cse8 .cse9))) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))) [2022-11-22 02:50:03,017 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 47) no Hoare annotation was computed. [2022-11-22 02:50:03,017 INFO L899 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2022-11-22 02:50:03,017 INFO L899 garLoopResultBuilder]: For program point L47-1(line 47) no Hoare annotation was computed. [2022-11-22 02:50:03,017 INFO L899 garLoopResultBuilder]: For program point L23-3(line 23) no Hoare annotation was computed. [2022-11-22 02:50:03,017 INFO L899 garLoopResultBuilder]: For program point L23-4(line 23) no Hoare annotation was computed. [2022-11-22 02:50:03,017 INFO L895 garLoopResultBuilder]: At program point L23-5(lines 23 25) the Hoare annotation is: (or (not (= |#NULL.offset| 0)) (and (<= 1 xor_~i~0) (<= xor_~x.offset 0) (<= 0 xor_~x.offset) (<= 0 xor_~x.base)) (not (= |#NULL.base| 0)) (not (<= 0 |#StackHeapBarrier|)) (not (<= 0 |xor_#in~x.base|)) (not (= |xor_#in~x.offset| 0))) [2022-11-22 02:50:03,017 INFO L899 garLoopResultBuilder]: For program point xorErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2022-11-22 02:50:03,018 INFO L902 garLoopResultBuilder]: At program point xorENTRY(lines 18 27) the Hoare annotation is: true [2022-11-22 02:50:03,018 INFO L899 garLoopResultBuilder]: For program point xorErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2022-11-22 02:50:03,018 INFO L899 garLoopResultBuilder]: For program point xorEXIT(lines 18 27) no Hoare annotation was computed. [2022-11-22 02:50:03,021 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:50:03,023 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 02:50:03,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:50:03 BoogieIcfgContainer [2022-11-22 02:50:03,043 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 02:50:03,044 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 02:50:03,044 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 02:50:03,044 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 02:50:03,045 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:49:49" (3/4) ... [2022-11-22 02:50:03,048 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 02:50:03,054 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure xor [2022-11-22 02:50:03,058 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 34 nodes and edges [2022-11-22 02:50:03,059 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-22 02:50:03,059 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-22 02:50:03,059 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 02:50:03,060 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 02:50:03,096 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 02:50:03,097 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 02:50:03,097 INFO L158 Benchmark]: Toolchain (without parser) took 14784.27ms. Allocated memory was 159.4MB in the beginning and 234.9MB in the end (delta: 75.5MB). Free memory was 125.1MB in the beginning and 179.4MB in the end (delta: -54.3MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2022-11-22 02:50:03,098 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 159.4MB. Free memory is still 125.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:50:03,098 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.30ms. Allocated memory is still 159.4MB. Free memory was 124.6MB in the beginning and 114.2MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 02:50:03,098 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.96ms. Allocated memory is still 159.4MB. Free memory was 114.2MB in the beginning and 112.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:50:03,099 INFO L158 Benchmark]: Boogie Preprocessor took 56.96ms. Allocated memory is still 159.4MB. Free memory was 112.7MB in the beginning and 111.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:50:03,099 INFO L158 Benchmark]: RCFGBuilder took 500.92ms. Allocated memory is still 159.4MB. Free memory was 111.1MB in the beginning and 92.8MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-22 02:50:03,099 INFO L158 Benchmark]: TraceAbstraction took 13803.61ms. Allocated memory was 159.4MB in the beginning and 234.9MB in the end (delta: 75.5MB). Free memory was 92.2MB in the beginning and 182.5MB in the end (delta: -90.3MB). Peak memory consumption was 105.0MB. Max. memory is 16.1GB. [2022-11-22 02:50:03,100 INFO L158 Benchmark]: Witness Printer took 53.18ms. Allocated memory is still 234.9MB. Free memory was 182.5MB in the beginning and 179.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:50:03,101 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 159.4MB. Free memory is still 125.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 305.30ms. Allocated memory is still 159.4MB. Free memory was 124.6MB in the beginning and 114.2MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.96ms. Allocated memory is still 159.4MB. Free memory was 114.2MB in the beginning and 112.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.96ms. Allocated memory is still 159.4MB. Free memory was 112.7MB in the beginning and 111.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 500.92ms. Allocated memory is still 159.4MB. Free memory was 111.1MB in the beginning and 92.8MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 13803.61ms. Allocated memory was 159.4MB in the beginning and 234.9MB in the end (delta: 75.5MB). Free memory was 92.2MB in the beginning and 182.5MB in the end (delta: -90.3MB). Peak memory consumption was 105.0MB. Max. memory is 16.1GB. * Witness Printer took 53.18ms. Allocated memory is still 234.9MB. Free memory was 182.5MB in the beginning and 179.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 37]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 37]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 13.7s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 165 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 155 mSDsluCounter, 362 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 219 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 625 IncrementalHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 143 mSDtfsCounter, 625 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 343 GetRequests, 233 SyntacticMatches, 8 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=1, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 13 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 22 PreInvPairs, 32 NumberOfFragments, 360 HoareAnnotationTreeSize, 22 FomulaSimplifications, 48 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 427 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 323 NumberOfCodeBlocks, 323 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 376 ConstructedInterpolants, 0 QuantifiedInterpolants, 538 SizeOfPredicates, 6 NumberOfNonLiveVariables, 976 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 22 InterpolantComputations, 6 PerfectInterpolantSequences, 147/165 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: OVERALL_TIME: 3.8s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 57, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 136, TOOLS_POST_TIME: 3.0s, TOOLS_POST_CALL_APPLICATIONS: 14, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 8, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 158, TOOLS_QUANTIFIERELIM_TIME: 3.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 278, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 21, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 15, DOMAIN_WIDEN_TIME: 0.2s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 25, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 57, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 10, LOOP_SUMMARIZER_CACHE_MISSES: 10, LOOP_SUMMARIZER_OVERALL_TIME: 2.4s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 2.4s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 25, CALL_SUMMARIZER_APPLICATIONS: 8, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.2s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.2s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 869, DAG_COMPRESSION_RETAINED_NODES: 197, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((((((((((((((((7 == unknown-#length-unknown[2] && unknown-#memory_int-unknown[2][0] == 120) && 114 == unknown-#memory_int-unknown[2][2]) && unknown-#memory_int-unknown[2][5] == 99) && i == 0) && 2 == unknown-#length-unknown[1]) && 111 == unknown-#memory_int-unknown[2][1]) && \valid[x] == 1) && unknown-#memory_int-unknown[2][4] == 46) && x == 0) && \valid[1] == 1) && unknown-#memory_int-unknown[2][6] == 0) && 400 == unknown-#length-unknown[x]) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && 49 == unknown-#memory_int-unknown[2][3]) && unknown-#StackHeapBarrier-unknown < x) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((i <= 2147483647 && x == 0) && 1 <= i) && #NULL == 0) && 0 <= x) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((1 <= i || unknown-#memory_int-unknown[x][x] == temp) && (((((((((((ret2 <= 2147483647 && i <= 0) && 0 <= x) && 0 <= i) && #NULL <= 0) && i <= 2147483647) && 0 <= ret2 + 2147483648) && 0 <= x) && 0 <= ret + 2147483648) && 0 <= #NULL) && x <= 0) || ((((((((((ret2 <= 2147483647 && 0 <= x) && #NULL <= 0) && i <= 2147483647) && 0 <= ret2 + 2147483648) && 1 <= i) && i <= 2147483647) && 0 <= x) && 0 <= ret + 2147483648) && 0 <= #NULL) && x <= 0))) && ret <= 2147483647) && 0 <= unknown-#StackHeapBarrier-unknown) && 100 <= i) && #NULL == 0 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((!(#NULL == 0) || (((1 <= i && x <= 0) && 0 <= x) && 0 <= x)) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(0 <= x)) || !(x == 0) RESULT: Ultimate proved your program to be correct! [2022-11-22 02:50:03,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88d7fa5-de6b-4f70-8fea-28989cb7f28f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE