./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-fpi/condn.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/condn.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh --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 d395fadb914a95d9511046d910130b84077290c26c4e0d02bd3863b898526b50 --- 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-2329fc7 [2022-12-14 07:53:25,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:53:25,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:53:25,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:53:25,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:53:25,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:53:25,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:53:25,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:53:25,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:53:25,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:53:25,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:53:25,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:53:25,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:53:25,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:53:25,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:53:25,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:53:25,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:53:25,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:53:25,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:53:25,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:53:25,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:53:25,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:53:25,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:53:25,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:53:25,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:53:25,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:53:25,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:53:25,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:53:25,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:53:25,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:53:25,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:53:25,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:53:25,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:53:25,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:53:25,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:53:25,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:53:25,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:53:25,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:53:25,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:53:25,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:53:25,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:53:25,945 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 07:53:25,967 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:53:25,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:53:25,967 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:53:25,968 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:53:25,968 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:53:25,969 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:53:25,969 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:53:25,969 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:53:25,969 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:53:25,969 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:53:25,969 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:53:25,969 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:53:25,970 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:53:25,970 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:53:25,970 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:53:25,970 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:53:25,970 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:53:25,970 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:53:25,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:53:25,971 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:53:25,971 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 07:53:25,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:53:25,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:53:25,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:53:25,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:53:25,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:53:25,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:53:25,973 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 07:53:25,973 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:53:25,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:53:25,973 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:53:25,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:53:25,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:53:25,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:53:25,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:53:25,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:53:25,974 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:53:25,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:53:25,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:53:25,974 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:53:25,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:53:25,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:53:25,975 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:53:25,975 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_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d395fadb914a95d9511046d910130b84077290c26c4e0d02bd3863b898526b50 [2022-12-14 07:53:26,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:53:26,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:53:26,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:53:26,177 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:53:26,177 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:53:26,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/array-fpi/condn.c [2022-12-14 07:53:28,696 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:53:28,858 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:53:28,858 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/sv-benchmarks/c/array-fpi/condn.c [2022-12-14 07:53:28,862 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/data/57eb8a9ef/69bb9c31cc9c432fb7b5d5dcbd07872a/FLAGb18877807 [2022-12-14 07:53:29,264 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/data/57eb8a9ef/69bb9c31cc9c432fb7b5d5dcbd07872a [2022-12-14 07:53:29,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:53:29,266 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:53:29,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:53:29,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:53:29,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:53:29,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:53:29" (1/1) ... [2022-12-14 07:53:29,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@472a984d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:29, skipping insertion in model container [2022-12-14 07:53:29,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:53:29" (1/1) ... [2022-12-14 07:53:29,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:53:29,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:53:29,406 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_a289a7ce-395f-4c40-aa46-01135014c750/sv-benchmarks/c/array-fpi/condn.c[588,601] [2022-12-14 07:53:29,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:53:29,428 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:53:29,440 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_a289a7ce-395f-4c40-aa46-01135014c750/sv-benchmarks/c/array-fpi/condn.c[588,601] [2022-12-14 07:53:29,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:53:29,456 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:53:29,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:29 WrapperNode [2022-12-14 07:53:29,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:53:29,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:53:29,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:53:29,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:53:29,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:29" (1/1) ... [2022-12-14 07:53:29,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:29" (1/1) ... [2022-12-14 07:53:29,479 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 84 [2022-12-14 07:53:29,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:53:29,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:53:29,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:53:29,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:53:29,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:29" (1/1) ... [2022-12-14 07:53:29,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:29" (1/1) ... [2022-12-14 07:53:29,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:29" (1/1) ... [2022-12-14 07:53:29,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:29" (1/1) ... [2022-12-14 07:53:29,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:29" (1/1) ... [2022-12-14 07:53:29,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:29" (1/1) ... [2022-12-14 07:53:29,493 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:29" (1/1) ... [2022-12-14 07:53:29,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:29" (1/1) ... [2022-12-14 07:53:29,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:53:29,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:53:29,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:53:29,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:53:29,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:29" (1/1) ... [2022-12-14 07:53:29,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:53:29,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:53:29,516 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:53:29,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:53:29,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:53:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:53:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 07:53:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 07:53:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:53:29,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:53:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 07:53:29,598 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:53:29,599 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:53:29,710 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:53:29,748 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:53:29,748 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-14 07:53:29,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:53:29 BoogieIcfgContainer [2022-12-14 07:53:29,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:53:29,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:53:29,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:53:29,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:53:29,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:53:29" (1/3) ... [2022-12-14 07:53:29,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6003fb0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:53:29, skipping insertion in model container [2022-12-14 07:53:29,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:29" (2/3) ... [2022-12-14 07:53:29,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6003fb0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:53:29, skipping insertion in model container [2022-12-14 07:53:29,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:53:29" (3/3) ... [2022-12-14 07:53:29,756 INFO L112 eAbstractionObserver]: Analyzing ICFG condn.c [2022-12-14 07:53:29,770 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:53:29,770 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-14 07:53:29,803 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:53:29,808 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;@60f55ea8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:53:29,808 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-14 07:53:29,811 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 18 states have internal predecessors, (22), 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) [2022-12-14 07:53:29,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 07:53:29,815 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:53:29,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 07:53:29,816 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:53:29,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:53:29,820 INFO L85 PathProgramCache]: Analyzing trace with hash 3670828, now seen corresponding path program 1 times [2022-12-14 07:53:29,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:53:29,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738379494] [2022-12-14 07:53:29,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:53:29,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:53:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:53:30,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:53:30,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:53:30,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738379494] [2022-12-14 07:53:30,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738379494] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:53:30,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:53:30,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:53:30,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623114621] [2022-12-14 07:53:30,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:53:30,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:53:30,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:53:30,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:53:30,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:53:30,070 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 18 states have internal predecessors, (22), 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) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2022-12-14 07:53:30,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:53:30,137 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-12-14 07:53:30,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:53:30,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 4 [2022-12-14 07:53:30,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:53:30,145 INFO L225 Difference]: With dead ends: 36 [2022-12-14 07:53:30,145 INFO L226 Difference]: Without dead ends: 30 [2022-12-14 07:53:30,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:53:30,149 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:53:30,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 30 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:53:30,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-12-14 07:53:30,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 20. [2022-12-14 07:53:30,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 19 states have internal predecessors, (23), 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) [2022-12-14 07:53:30,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-12-14 07:53:30,173 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 4 [2022-12-14 07:53:30,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:53:30,173 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-12-14 07:53:30,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2022-12-14 07:53:30,174 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-12-14 07:53:30,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 07:53:30,174 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:53:30,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 07:53:30,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:53:30,174 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:53:30,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:53:30,175 INFO L85 PathProgramCache]: Analyzing trace with hash 113803900, now seen corresponding path program 1 times [2022-12-14 07:53:30,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:53:30,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545613670] [2022-12-14 07:53:30,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:53:30,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:53:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:53:30,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:53:30,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:53:30,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545613670] [2022-12-14 07:53:30,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545613670] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:53:30,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:53:30,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:53:30,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968466532] [2022-12-14 07:53:30,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:53:30,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:53:30,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:53:30,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:53:30,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:53:30,235 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-12-14 07:53:30,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:53:30,257 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-12-14 07:53:30,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:53:30,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-12-14 07:53:30,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:53:30,258 INFO L225 Difference]: With dead ends: 30 [2022-12-14 07:53:30,258 INFO L226 Difference]: Without dead ends: 20 [2022-12-14 07:53:30,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:53:30,259 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:53:30,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:53:30,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-14 07:53:30,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-12-14 07:53:30,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 19 states have internal predecessors, (22), 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) [2022-12-14 07:53:30,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-12-14 07:53:30,262 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 5 [2022-12-14 07:53:30,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:53:30,262 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-12-14 07:53:30,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-12-14 07:53:30,263 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-12-14 07:53:30,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 07:53:30,263 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:53:30,263 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-12-14 07:53:30,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:53:30,263 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:53:30,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:53:30,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1983513938, now seen corresponding path program 1 times [2022-12-14 07:53:30,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:53:30,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392375578] [2022-12-14 07:53:30,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:53:30,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:53:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:53:30,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:53:30,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:53:30,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392375578] [2022-12-14 07:53:30,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392375578] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:53:30,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955403083] [2022-12-14 07:53:30,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:53:30,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:53:30,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:53:30,340 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:53:30,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 07:53:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:53:30,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 07:53:30,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:53:30,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:53:30,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:53:30,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955403083] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:53:30,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 07:53:30,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-12-14 07:53:30,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973874153] [2022-12-14 07:53:30,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:53:30,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 07:53:30,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:53:30,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 07:53:30,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:53:30,436 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 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) [2022-12-14 07:53:30,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:53:30,484 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-12-14 07:53:30,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:53:30,484 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 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 [2022-12-14 07:53:30,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:53:30,485 INFO L225 Difference]: With dead ends: 30 [2022-12-14 07:53:30,485 INFO L226 Difference]: Without dead ends: 29 [2022-12-14 07:53:30,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-12-14 07:53:30,486 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 16 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:53:30,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 36 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:53:30,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-14 07:53:30,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 19. [2022-12-14 07:53:30,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.5) internal successors, (21), 18 states have internal predecessors, (21), 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) [2022-12-14 07:53:30,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-12-14 07:53:30,491 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 7 [2022-12-14 07:53:30,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:53:30,491 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-12-14 07:53:30,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 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) [2022-12-14 07:53:30,491 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-12-14 07:53:30,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 07:53:30,492 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:53:30,492 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2022-12-14 07:53:30,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 07:53:30,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:53:30,694 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:53:30,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:53:30,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1359389992, now seen corresponding path program 1 times [2022-12-14 07:53:30,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:53:30,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220950546] [2022-12-14 07:53:30,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:53:30,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:53:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:53:30,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:53:30,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:53:30,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220950546] [2022-12-14 07:53:30,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220950546] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:53:30,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205310303] [2022-12-14 07:53:30,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:53:30,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:53:30,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:53:30,900 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:53:30,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 07:53:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:53:30,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 07:53:30,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:53:30,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:53:30,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:53:31,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:53:31,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205310303] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:53:31,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [8358917] [2022-12-14 07:53:31,022 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-12-14 07:53:31,022 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:53:31,026 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:53:31,031 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:53:31,032 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:53:31,155 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-12-14 07:53:31,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-12-14 07:53:31,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 07:53:31,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 112 [2022-12-14 07:53:31,332 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 0 case distinctions, treesize of input 112 treesize of output 132 [2022-12-14 07:53:31,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:31,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:31,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:31,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:31,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:31,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:31,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:31,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:31,548 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:53:31,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:31,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:31,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:31,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:31,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:31,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:31,555 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:53:31,577 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-12-14 07:53:31,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 39 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 23 case distinctions, treesize of input 417 treesize of output 397 [2022-12-14 07:53:31,852 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 [2022-12-14 07:53:31,877 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 [2022-12-14 07:53:31,893 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:53:32,707 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '302#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (< 2147483646 |ULTIMATE.start_main_#t~post6#1|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-12-14 07:53:32,707 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:53:32,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:53:32,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-14 07:53:32,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46432483] [2022-12-14 07:53:32,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:53:32,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 07:53:32,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:53:32,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 07:53:32,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-12-14 07:53:32,709 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 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) [2022-12-14 07:53:32,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:53:32,790 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2022-12-14 07:53:32,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 07:53:32,790 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 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 8 [2022-12-14 07:53:32,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:53:32,792 INFO L225 Difference]: With dead ends: 39 [2022-12-14 07:53:32,792 INFO L226 Difference]: Without dead ends: 38 [2022-12-14 07:53:32,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2022-12-14 07:53:32,793 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 28 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:53:32,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 55 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:53:32,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-12-14 07:53:32,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2022-12-14 07:53:32,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.434782608695652) internal successors, (33), 27 states have internal predecessors, (33), 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) [2022-12-14 07:53:32,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2022-12-14 07:53:32,796 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 8 [2022-12-14 07:53:32,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:53:32,796 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2022-12-14 07:53:32,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 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) [2022-12-14 07:53:32,796 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2022-12-14 07:53:32,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 07:53:32,797 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:53:32,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:53:32,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 07:53:32,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:53:32,998 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:53:32,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:53:32,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1359398166, now seen corresponding path program 1 times [2022-12-14 07:53:32,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:53:32,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603049991] [2022-12-14 07:53:32,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:53:32,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:53:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:53:33,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:53:33,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:53:33,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603049991] [2022-12-14 07:53:33,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603049991] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:53:33,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:53:33,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:53:33,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389876193] [2022-12-14 07:53:33,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:53:33,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:53:33,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:53:33,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:53:33,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:53:33,044 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-12-14 07:53:33,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:53:33,064 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2022-12-14 07:53:33,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:53:33,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2022-12-14 07:53:33,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:53:33,065 INFO L225 Difference]: With dead ends: 38 [2022-12-14 07:53:33,065 INFO L226 Difference]: Without dead ends: 36 [2022-12-14 07:53:33,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:53:33,066 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:53:33,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 24 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:53:33,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-12-14 07:53:33,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2022-12-14 07:53:33,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 30 states have internal predecessors, (37), 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) [2022-12-14 07:53:33,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2022-12-14 07:53:33,069 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 8 [2022-12-14 07:53:33,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:53:33,069 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2022-12-14 07:53:33,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-12-14 07:53:33,069 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2022-12-14 07:53:33,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 07:53:33,070 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:53:33,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:53:33,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 07:53:33,070 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:53:33,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:53:33,070 INFO L85 PathProgramCache]: Analyzing trace with hash -808336776, now seen corresponding path program 1 times [2022-12-14 07:53:33,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:53:33,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351843422] [2022-12-14 07:53:33,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:53:33,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:53:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:53:33,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:53:33,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:53:33,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351843422] [2022-12-14 07:53:33,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351843422] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:53:33,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:53:33,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:53:33,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112227172] [2022-12-14 07:53:33,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:53:33,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:53:33,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:53:33,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:53:33,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:53:33,114 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-12-14 07:53:33,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:53:33,134 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2022-12-14 07:53:33,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:53:33,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-12-14 07:53:33,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:53:33,135 INFO L225 Difference]: With dead ends: 41 [2022-12-14 07:53:33,135 INFO L226 Difference]: Without dead ends: 36 [2022-12-14 07:53:33,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:53:33,136 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 21 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:53:33,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 19 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:53:33,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-12-14 07:53:33,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2022-12-14 07:53:33,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 30 states have internal predecessors, (36), 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) [2022-12-14 07:53:33,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-12-14 07:53:33,141 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 9 [2022-12-14 07:53:33,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:53:33,141 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-12-14 07:53:33,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-12-14 07:53:33,141 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-12-14 07:53:33,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 07:53:33,141 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:53:33,142 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:53:33,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 07:53:33,142 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:53:33,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:53:33,142 INFO L85 PathProgramCache]: Analyzing trace with hash 584211365, now seen corresponding path program 1 times [2022-12-14 07:53:33,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:53:33,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948574642] [2022-12-14 07:53:33,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:53:33,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:53:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:53:33,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:53:33,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:53:33,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948574642] [2022-12-14 07:53:33,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948574642] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:53:33,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244934550] [2022-12-14 07:53:33,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:53:33,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:53:33,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:53:33,212 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:53:33,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 07:53:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:53:33,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 07:53:33,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:53:33,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:53:33,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:53:33,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244934550] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:53:33,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 07:53:33,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-12-14 07:53:33,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047656435] [2022-12-14 07:53:33,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:53:33,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 07:53:33,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:53:33,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 07:53:33,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:53:33,268 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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) [2022-12-14 07:53:33,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:53:33,300 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-12-14 07:53:33,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:53:33,301 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 11 [2022-12-14 07:53:33,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:53:33,302 INFO L225 Difference]: With dead ends: 36 [2022-12-14 07:53:33,302 INFO L226 Difference]: Without dead ends: 35 [2022-12-14 07:53:33,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-12-14 07:53:33,303 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:53:33,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 23 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:53:33,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-14 07:53:33,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2022-12-14 07:53:33,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 29 states have internal predecessors, (35), 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) [2022-12-14 07:53:33,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2022-12-14 07:53:33,306 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 11 [2022-12-14 07:53:33,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:53:33,307 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2022-12-14 07:53:33,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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) [2022-12-14 07:53:33,307 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2022-12-14 07:53:33,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 07:53:33,307 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:53:33,307 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:53:33,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 07:53:33,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:53:33,509 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:53:33,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:53:33,510 INFO L85 PathProgramCache]: Analyzing trace with hash 930683212, now seen corresponding path program 1 times [2022-12-14 07:53:33,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:53:33,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549499483] [2022-12-14 07:53:33,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:53:33,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:53:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:53:33,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:53:33,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:53:33,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549499483] [2022-12-14 07:53:33,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549499483] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:53:33,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188836104] [2022-12-14 07:53:33,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:53:33,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:53:33,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:53:33,593 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:53:33,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 07:53:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:53:33,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 07:53:33,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:53:33,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:53:33,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:53:33,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:53:33,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188836104] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:53:33,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [280146623] [2022-12-14 07:53:33,690 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 07:53:33,691 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:53:33,691 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:53:33,691 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:53:33,691 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:53:33,754 INFO L321 Elim1Store]: treesize reduction 42, result has 40.0 percent of original size [2022-12-14 07:53:33,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 46 [2022-12-14 07:53:33,800 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-12-14 07:53:33,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-12-14 07:53:33,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 112 [2022-12-14 07:53:33,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:33,901 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 0 case distinctions, treesize of input 102 treesize of output 127 [2022-12-14 07:53:34,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:34,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:34,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:34,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:34,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:34,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:34,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:34,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:34,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:53:34,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:34,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:34,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:34,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:34,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:34,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:34,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:53:34,085 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-12-14 07:53:34,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 40 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 23 case distinctions, treesize of input 417 treesize of output 397 [2022-12-14 07:53:34,293 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 [2022-12-14 07:53:34,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-14 07:53:34,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2022-12-14 07:53:34,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:34,400 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:53:34,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 71 [2022-12-14 07:53:34,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-12-14 07:53:34,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:34,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 19 treesize of output 11 [2022-12-14 07:53:34,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:34,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 31 treesize of output 19 [2022-12-14 07:53:34,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-14 07:53:34,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2022-12-14 07:53:34,495 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 [2022-12-14 07:53:34,505 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:53:35,316 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '787#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< 2147483646 |ULTIMATE.start_main_#t~post8#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-12-14 07:53:35,316 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:53:35,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:53:35,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-14 07:53:35,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339198801] [2022-12-14 07:53:35,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:53:35,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 07:53:35,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:53:35,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 07:53:35,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-12-14 07:53:35,318 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 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) [2022-12-14 07:53:35,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:53:35,398 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2022-12-14 07:53:35,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 07:53:35,398 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 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 12 [2022-12-14 07:53:35,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:53:35,398 INFO L225 Difference]: With dead ends: 45 [2022-12-14 07:53:35,398 INFO L226 Difference]: Without dead ends: 44 [2022-12-14 07:53:35,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2022-12-14 07:53:35,399 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 24 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:53:35,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 42 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:53:35,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-12-14 07:53:35,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2022-12-14 07:53:35,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 38 states have internal predecessors, (47), 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) [2022-12-14 07:53:35,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2022-12-14 07:53:35,402 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 12 [2022-12-14 07:53:35,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:53:35,402 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2022-12-14 07:53:35,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 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) [2022-12-14 07:53:35,402 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2022-12-14 07:53:35,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 07:53:35,403 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:53:35,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:53:35,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 07:53:35,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:53:35,604 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:53:35,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:53:35,606 INFO L85 PathProgramCache]: Analyzing trace with hash 930676169, now seen corresponding path program 1 times [2022-12-14 07:53:35,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:53:35,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346325918] [2022-12-14 07:53:35,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:53:35,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:53:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:53:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 07:53:35,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:53:35,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346325918] [2022-12-14 07:53:35,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346325918] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:53:35,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:53:35,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:53:35,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721336370] [2022-12-14 07:53:35,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:53:35,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:53:35,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:53:35,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:53:35,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:53:35,673 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-12-14 07:53:35,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:53:35,699 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2022-12-14 07:53:35,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:53:35,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2022-12-14 07:53:35,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:53:35,700 INFO L225 Difference]: With dead ends: 44 [2022-12-14 07:53:35,700 INFO L226 Difference]: Without dead ends: 42 [2022-12-14 07:53:35,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:53:35,701 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:53:35,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 21 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:53:35,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-12-14 07:53:35,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-12-14 07:53:35,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 41 states have internal predecessors, (50), 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) [2022-12-14 07:53:35,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2022-12-14 07:53:35,706 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 12 [2022-12-14 07:53:35,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:53:35,706 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2022-12-14 07:53:35,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-12-14 07:53:35,706 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2022-12-14 07:53:35,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 07:53:35,707 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:53:35,707 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:53:35,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 07:53:35,707 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:53:35,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:53:35,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1759962923, now seen corresponding path program 1 times [2022-12-14 07:53:35,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:53:35,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465063853] [2022-12-14 07:53:35,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:53:35,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:53:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:53:35,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 07:53:35,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:53:35,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465063853] [2022-12-14 07:53:35,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465063853] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:53:35,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487258212] [2022-12-14 07:53:35,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:53:35,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:53:35,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:53:35,768 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:53:35,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 07:53:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:53:35,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 07:53:35,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:53:35,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 07:53:35,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:53:35,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487258212] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:53:35,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 07:53:35,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-12-14 07:53:35,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388271597] [2022-12-14 07:53:35,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:53:35,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 07:53:35,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:53:35,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 07:53:35,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:53:35,835 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-12-14 07:53:35,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:53:35,866 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2022-12-14 07:53:35,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:53:35,866 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 15 [2022-12-14 07:53:35,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:53:35,866 INFO L225 Difference]: With dead ends: 42 [2022-12-14 07:53:35,867 INFO L226 Difference]: Without dead ends: 41 [2022-12-14 07:53:35,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-12-14 07:53:35,867 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 11 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:53:35,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 26 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:53:35,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-12-14 07:53:35,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-12-14 07:53:35,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 40 states have internal predecessors, (49), 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) [2022-12-14 07:53:35,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2022-12-14 07:53:35,872 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 15 [2022-12-14 07:53:35,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:53:35,872 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2022-12-14 07:53:35,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-12-14 07:53:35,872 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2022-12-14 07:53:35,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 07:53:35,873 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:53:35,873 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:53:35,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 07:53:36,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 07:53:36,074 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:53:36,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:53:36,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1275724127, now seen corresponding path program 1 times [2022-12-14 07:53:36,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:53:36,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623925899] [2022-12-14 07:53:36,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:53:36,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:53:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:53:36,134 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 07:53:36,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:53:36,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623925899] [2022-12-14 07:53:36,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623925899] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:53:36,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848465168] [2022-12-14 07:53:36,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:53:36,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:53:36,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:53:36,136 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:53:36,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 07:53:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:53:36,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 07:53:36,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:53:36,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 07:53:36,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:53:36,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 07:53:36,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848465168] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:53:36,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [70993311] [2022-12-14 07:53:36,224 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 07:53:36,224 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:53:36,224 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:53:36,224 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:53:36,225 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:53:36,283 INFO L321 Elim1Store]: treesize reduction 42, result has 40.0 percent of original size [2022-12-14 07:53:36,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 46 [2022-12-14 07:53:36,328 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-12-14 07:53:36,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-12-14 07:53:36,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 112 [2022-12-14 07:53:36,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:36,414 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 0 case distinctions, treesize of input 102 treesize of output 127 [2022-12-14 07:53:36,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:36,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:36,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:36,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:36,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:36,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:36,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:36,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:36,559 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:53:36,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:36,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:36,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:36,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:36,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:36,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:36,565 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:53:36,586 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-12-14 07:53:36,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 39 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 23 case distinctions, treesize of input 417 treesize of output 397 [2022-12-14 07:53:36,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 07:53:36,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2022-12-14 07:53:36,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-14 07:53:36,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:36,830 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:53:36,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 71 [2022-12-14 07:53:36,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:36,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 19 treesize of output 11 [2022-12-14 07:53:36,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 31 [2022-12-14 07:53:36,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:36,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 31 treesize of output 19 [2022-12-14 07:53:36,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2022-12-14 07:53:36,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-14 07:53:36,943 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 [2022-12-14 07:53:36,950 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:53:37,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [70993311] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:53:37,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:53:37,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5, 5, 5] total 19 [2022-12-14 07:53:37,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787793402] [2022-12-14 07:53:37,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:53:37,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 07:53:37,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:53:37,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 07:53:37,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-12-14 07:53:37,926 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2022-12-14 07:53:38,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:53:38,882 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2022-12-14 07:53:38,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 07:53:38,882 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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 16 [2022-12-14 07:53:38,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:53:38,883 INFO L225 Difference]: With dead ends: 41 [2022-12-14 07:53:38,883 INFO L226 Difference]: Without dead ends: 33 [2022-12-14 07:53:38,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-12-14 07:53:38,884 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:53:38,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:53:38,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-12-14 07:53:38,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 22. [2022-12-14 07:53:38,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 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) [2022-12-14 07:53:38,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-12-14 07:53:38,892 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2022-12-14 07:53:38,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:53:38,892 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-12-14 07:53:38,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2022-12-14 07:53:38,893 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-12-14 07:53:38,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 07:53:38,893 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:53:38,893 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:53:38,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 07:53:39,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 07:53:39,095 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:53:39,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:53:39,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1931969861, now seen corresponding path program 2 times [2022-12-14 07:53:39,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:53:39,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89291052] [2022-12-14 07:53:39,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:53:39,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:53:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:53:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 07:53:39,212 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:53:39,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89291052] [2022-12-14 07:53:39,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89291052] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:53:39,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31732573] [2022-12-14 07:53:39,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:53:39,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:53:39,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:53:39,214 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:53:39,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 07:53:39,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 07:53:39,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:53:39,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 07:53:39,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:53:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-14 07:53:39,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:53:39,308 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-14 07:53:39,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31732573] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:53:39,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [777915372] [2022-12-14 07:53:39,310 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 07:53:39,310 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:53:39,310 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:53:39,310 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:53:39,310 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:53:39,361 INFO L321 Elim1Store]: treesize reduction 42, result has 40.0 percent of original size [2022-12-14 07:53:39,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 46 [2022-12-14 07:53:39,403 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-12-14 07:53:39,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-12-14 07:53:39,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 112 [2022-12-14 07:53:39,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:39,483 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 0 case distinctions, treesize of input 102 treesize of output 127 [2022-12-14 07:53:39,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:39,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:39,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:39,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:39,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:39,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:39,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:39,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:39,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:53:39,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:39,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:39,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:39,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:39,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:39,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:39,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:53:39,683 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-12-14 07:53:39,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 40 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 23 case distinctions, treesize of input 417 treesize of output 397 [2022-12-14 07:53:39,846 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 [2022-12-14 07:53:39,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-14 07:53:39,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2022-12-14 07:53:39,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:39,938 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:53:39,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 71 [2022-12-14 07:53:39,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:39,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 20 treesize of output 12 [2022-12-14 07:53:39,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 30 [2022-12-14 07:53:39,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:53:39,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 18 [2022-12-14 07:53:39,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-14 07:53:39,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2022-12-14 07:53:40,012 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 [2022-12-14 07:53:40,021 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:53:40,831 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1516#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< 2147483646 |ULTIMATE.start_main_#t~post8#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-12-14 07:53:40,831 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:53:40,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:53:40,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 2, 2] total 10 [2022-12-14 07:53:40,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259889070] [2022-12-14 07:53:40,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:53:40,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 07:53:40,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:53:40,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 07:53:40,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-12-14 07:53:40,833 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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) [2022-12-14 07:53:40,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:53:40,955 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2022-12-14 07:53:40,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 07:53:40,955 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 21 [2022-12-14 07:53:40,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:53:40,955 INFO L225 Difference]: With dead ends: 42 [2022-12-14 07:53:40,956 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 07:53:40,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2022-12-14 07:53:40,957 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:53:40,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:53:40,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 07:53:40,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 07:53:40,957 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) [2022-12-14 07:53:40,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 07:53:40,957 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2022-12-14 07:53:40,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:53:40,957 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 07:53:40,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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) [2022-12-14 07:53:40,958 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 07:53:40,958 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 07:53:40,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-12-14 07:53:40,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-12-14 07:53:40,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-12-14 07:53:40,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-12-14 07:53:40,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-12-14 07:53:40,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-12-14 07:53:40,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-14 07:53:41,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:53:41,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 07:53:41,899 INFO L899 garLoopResultBuilder]: For program point L35-3(line 35) no Hoare annotation was computed. [2022-12-14 07:53:41,899 INFO L899 garLoopResultBuilder]: For program point L35-4(line 35) no Hoare annotation was computed. [2022-12-14 07:53:41,899 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 35) no Hoare annotation was computed. [2022-12-14 07:53:41,900 INFO L895 garLoopResultBuilder]: At program point L35-5(lines 35 42) the Hoare annotation is: (and (<= 1 ~N~0) (let ((.cse0 (<= 0 |#NULL.base|)) (.cse1 (<= 0 |ULTIMATE.start_main_~a~0#1.offset|)) (.cse2 (<= ~N~0 2147483647)) (.cse3 (<= |#NULL.offset| 0)) (.cse4 (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|)) (.cse5 (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|)) (.cse6 (<= |#NULL.base| 0)) (.cse7 (<= 0 |#NULL.offset|)) (.cse8 (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1)) (.cse9 (<= 0 |#StackHeapBarrier|)) (.cse10 (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse11 (<= |ULTIMATE.start_main_~a~0#1.offset| 0))) (or (and .cse0 .cse1 (<= 1 |ULTIMATE.start_main_~i~0#1|) .cse2 (<= |ULTIMATE.start_main_~i~0#1| 2147483647) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse0 .cse1 .cse2 (<= |ULTIMATE.start_main_~i~0#1| 0) .cse3 .cse4 (<= 0 |ULTIMATE.start_main_~i~0#1|) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11)))) [2022-12-14 07:53:41,900 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 21 49) the Hoare annotation is: true [2022-12-14 07:53:41,900 INFO L899 garLoopResultBuilder]: For program point L44-3(line 44) no Hoare annotation was computed. [2022-12-14 07:53:41,900 INFO L899 garLoopResultBuilder]: For program point L44-4(line 44) no Hoare annotation was computed. [2022-12-14 07:53:41,900 INFO L895 garLoopResultBuilder]: At program point L44-5(lines 44 47) the Hoare annotation is: (let ((.cse0 (<= 0 |#NULL.base|)) (.cse1 (<= 0 |ULTIMATE.start_main_~a~0#1.offset|)) (.cse2 (<= ~N~0 2147483647)) (.cse3 (<= 1 ~N~0)) (.cse4 (<= |#NULL.offset| 0)) (.cse5 (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|)) (.cse6 (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|)) (.cse7 (<= |#NULL.base| 0)) (.cse8 (<= 0 |#NULL.offset|)) (.cse9 (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1)) (.cse10 (<= 0 |#StackHeapBarrier|)) (.cse11 (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse12 (<= |ULTIMATE.start_main_~a~0#1.offset| 0))) (or (and .cse0 .cse1 .cse2 (<= |ULTIMATE.start_main_~i~0#1| 0) .cse3 .cse4 .cse5 (<= 0 |ULTIMATE.start_main_~i~0#1|) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse0 .cse1 (<= 1 |ULTIMATE.start_main_~i~0#1|) .cse2 (<= |ULTIMATE.start_main_~i~0#1| 2147483647) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12))) [2022-12-14 07:53:41,900 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 30) no Hoare annotation was computed. [2022-12-14 07:53:41,901 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 44) no Hoare annotation was computed. [2022-12-14 07:53:41,901 INFO L899 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2022-12-14 07:53:41,901 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 30) no Hoare annotation was computed. [2022-12-14 07:53:41,901 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 07:53:41,901 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 44) no Hoare annotation was computed. [2022-12-14 07:53:41,901 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 07:53:41,901 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 35) no Hoare annotation was computed. [2022-12-14 07:53:41,901 INFO L899 garLoopResultBuilder]: For program point L30-3(line 30) no Hoare annotation was computed. [2022-12-14 07:53:41,901 INFO L899 garLoopResultBuilder]: For program point L30-4(line 30) no Hoare annotation was computed. [2022-12-14 07:53:41,902 INFO L895 garLoopResultBuilder]: At program point L30-5(lines 30 33) the Hoare annotation is: (let ((.cse0 (<= 0 |ULTIMATE.start_main_~a~0#1.offset|)) (.cse1 (<= ~N~0 2147483647)) (.cse2 (<= 1 ~N~0)) (.cse3 (<= |ULTIMATE.start_main_~a~0#1.offset| 0))) (or (and (<= 0 |#NULL.base|) .cse0 (<= 1 |ULTIMATE.start_main_~i~0#1|) .cse1 (<= |ULTIMATE.start_main_~i~0#1| 2147483647) .cse2 (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse3) (let ((.cse4 (select |#memory_int| 2)) (.cse5 (select |#memory_int| 1))) (and (= (select .cse4 7) 0) (= (select |#length| 3) 12) (= (select .cse4 4) 110) (< |ULTIMATE.start_main_~a~0#1.base| |#StackHeapBarrier|) (= (select |#length| |ULTIMATE.start_main_~a~0#1.base|) (* (mod ~N~0 1073741824) 4)) .cse0 .cse1 (<= |ULTIMATE.start_main_~i~0#1| 0) (= (select .cse4 6) 99) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) .cse2 (= 111 (select .cse4 1)) (= 100 (select .cse4 3)) (= (ite (<= (mod ~N~0 4294967296) 536870911) 1 0) |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (= (select .cse4 0) 99) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (not (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (select .cse4 5) 46) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= 8 (select |#length| 2)) (= 110 (select .cse4 2)) (= (select .cse5 0) 48) (not (= 3 |ULTIMATE.start_main_~a~0#1.base|)) (= (select |#valid| |ULTIMATE.start_main_~a~0#1.base|) 1) (not (= 2 |ULTIMATE.start_main_~a~0#1.base|)) (= (select .cse5 1) 0) .cse3 (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))))) [2022-12-14 07:53:41,904 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:53:41,905 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 07:53:41,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:53:41 BoogieIcfgContainer [2022-12-14 07:53:41,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 07:53:41,925 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 07:53:41,925 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 07:53:41,925 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 07:53:41,925 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:53:29" (3/4) ... [2022-12-14 07:53:41,927 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 07:53:41,933 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-12-14 07:53:41,933 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-12-14 07:53:41,933 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-14 07:53:41,933 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 07:53:41,934 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 07:53:41,950 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((0 <= #NULL && 0 <= a) && 1 <= i) && N <= 2147483647) && i <= 2147483647) && 1 <= N) && #NULL <= 0) && 0 <= \old(cond)) && 0 <= cond) && #NULL <= 0) && 0 <= #NULL) && \old(cond) <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && cond <= 1) && a <= 0) || (((((((((((((((((((((((((((((((((unknown-#memory_int-unknown[2][7] == 0 && unknown-#length-unknown[3] == 12) && unknown-#memory_int-unknown[2][4] == 110) && a < unknown-#StackHeapBarrier-unknown) && unknown-#length-unknown[a] == N % 1073741824 * 4) && 0 <= a) && N <= 2147483647) && i <= 0) && unknown-#memory_int-unknown[2][6] == 99) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && 1 <= N) && 111 == unknown-#memory_int-unknown[2][1]) && 100 == unknown-#memory_int-unknown[2][3]) && (if N % 4294967296 <= 536870911 then 1 else 0) == \old(cond)) && unknown-#memory_int-unknown[2][0] == 99) && 0 <= i) && \old(cond) == cond) && \valid[1] == 1) && \valid[0] == 0) && !(cond == 0)) && unknown-#memory_int-unknown[2][5] == 46) && \valid[2] == 1) && #NULL == 0) && 8 == unknown-#length-unknown[2]) && 110 == unknown-#memory_int-unknown[2][2]) && unknown-#memory_int-unknown[1][0] == 48) && !(3 == a)) && \valid[a] == 1) && !(2 == a)) && unknown-#memory_int-unknown[1][1] == 0) && a <= 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) [2022-12-14 07:53:41,951 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: 1 <= N && ((((((((((((((0 <= #NULL && 0 <= a) && 1 <= i) && N <= 2147483647) && i <= 2147483647) && #NULL <= 0) && 0 <= \old(cond)) && 0 <= cond) && #NULL <= 0) && 0 <= #NULL) && \old(cond) <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && cond <= 1) && a <= 0) || (((((((((((((0 <= #NULL && 0 <= a) && N <= 2147483647) && i <= 0) && #NULL <= 0) && 0 <= \old(cond)) && 0 <= i) && 0 <= cond) && #NULL <= 0) && 0 <= #NULL) && \old(cond) <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && cond <= 1) && a <= 0)) [2022-12-14 07:53:41,951 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((0 <= #NULL && 0 <= a) && N <= 2147483647) && i <= 0) && 1 <= N) && #NULL <= 0) && 0 <= \old(cond)) && 0 <= i) && 0 <= cond) && #NULL <= 0) && 0 <= #NULL) && \old(cond) <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && cond <= 1) && a <= 0) || ((((((((((((((0 <= #NULL && 0 <= a) && 1 <= i) && N <= 2147483647) && i <= 2147483647) && 1 <= N) && #NULL <= 0) && 0 <= \old(cond)) && 0 <= cond) && #NULL <= 0) && 0 <= #NULL) && \old(cond) <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && cond <= 1) && a <= 0) [2022-12-14 07:53:41,960 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 07:53:41,960 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 07:53:41,960 INFO L158 Benchmark]: Toolchain (without parser) took 12693.97ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 80.5MB in the beginning and 66.3MB in the end (delta: 14.2MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-12-14 07:53:41,961 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 113.2MB. Free memory is still 55.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:53:41,961 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.73ms. Allocated memory is still 113.2MB. Free memory was 80.1MB in the beginning and 69.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 07:53:41,961 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.73ms. Allocated memory is still 113.2MB. Free memory was 69.6MB in the beginning and 67.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:53:41,962 INFO L158 Benchmark]: Boogie Preprocessor took 14.87ms. Allocated memory is still 113.2MB. Free memory was 67.9MB in the beginning and 66.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:53:41,962 INFO L158 Benchmark]: RCFGBuilder took 255.40ms. Allocated memory is still 113.2MB. Free memory was 66.7MB in the beginning and 51.6MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 07:53:41,962 INFO L158 Benchmark]: TraceAbstraction took 12172.40ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 51.2MB in the beginning and 69.4MB in the end (delta: -18.3MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. [2022-12-14 07:53:41,963 INFO L158 Benchmark]: Witness Printer took 35.43ms. Allocated memory is still 136.3MB. Free memory was 69.4MB in the beginning and 66.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:53:41,964 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 113.2MB. Free memory is still 55.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 189.73ms. Allocated memory is still 113.2MB. Free memory was 80.1MB in the beginning and 69.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.73ms. Allocated memory is still 113.2MB. Free memory was 69.6MB in the beginning and 67.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.87ms. Allocated memory is still 113.2MB. Free memory was 67.9MB in the beginning and 66.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 255.40ms. Allocated memory is still 113.2MB. Free memory was 66.7MB in the beginning and 51.6MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 12172.40ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 51.2MB in the beginning and 69.4MB in the end (delta: -18.3MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. * Witness Printer took 35.43ms. Allocated memory is still 136.3MB. Free memory was 69.4MB in the beginning and 66.3MB 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: 30]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 30]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 35]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 35]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: 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 1 procedures, 19 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 12.1s, OverallIterations: 12, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 165 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 165 mSDsluCounter, 299 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 210 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 530 IncrementalHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 89 mSDtfsCounter, 530 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 275 GetRequests, 151 SyntacticMatches, 4 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=9, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 61 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 16 NumberOfFragments, 407 HoareAnnotationTreeSize, 4 FomulaSimplifications, 2338 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 1323 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 218 NumberOfCodeBlocks, 203 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 252 ConstructedInterpolants, 0 QuantifiedInterpolants, 560 SizeOfPredicates, 15 NumberOfNonLiveVariables, 695 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 23 InterpolantComputations, 8 PerfectInterpolantSequences, 100/151 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: 0.7s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 13, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 35, TOOLS_POST_TIME: 0.6s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 35, TOOLS_QUANTIFIERELIM_TIME: 0.6s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 65, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 5, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 7, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 13, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 3, LOOP_SUMMARIZER_CACHE_MISSES: 3, LOOP_SUMMARIZER_OVERALL_TIME: 0.4s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.4s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 7, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, 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: 250, DAG_COMPRESSION_RETAINED_NODES: 45, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((((((((((((0 <= #NULL && 0 <= a) && 1 <= i) && N <= 2147483647) && i <= 2147483647) && 1 <= N) && #NULL <= 0) && 0 <= \old(cond)) && 0 <= cond) && #NULL <= 0) && 0 <= #NULL) && \old(cond) <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && cond <= 1) && a <= 0) || (((((((((((((((((((((((((((((((((unknown-#memory_int-unknown[2][7] == 0 && unknown-#length-unknown[3] == 12) && unknown-#memory_int-unknown[2][4] == 110) && a < unknown-#StackHeapBarrier-unknown) && unknown-#length-unknown[a] == N % 1073741824 * 4) && 0 <= a) && N <= 2147483647) && i <= 0) && unknown-#memory_int-unknown[2][6] == 99) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && 1 <= N) && 111 == unknown-#memory_int-unknown[2][1]) && 100 == unknown-#memory_int-unknown[2][3]) && (if N % 4294967296 <= 536870911 then 1 else 0) == \old(cond)) && unknown-#memory_int-unknown[2][0] == 99) && 0 <= i) && \old(cond) == cond) && \valid[1] == 1) && \valid[0] == 0) && !(cond == 0)) && unknown-#memory_int-unknown[2][5] == 46) && \valid[2] == 1) && #NULL == 0) && 8 == unknown-#length-unknown[2]) && 110 == unknown-#memory_int-unknown[2][2]) && unknown-#memory_int-unknown[1][0] == 48) && !(3 == a)) && \valid[a] == 1) && !(2 == a)) && unknown-#memory_int-unknown[1][1] == 0) && a <= 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 <= N && ((((((((((((((0 <= #NULL && 0 <= a) && 1 <= i) && N <= 2147483647) && i <= 2147483647) && #NULL <= 0) && 0 <= \old(cond)) && 0 <= cond) && #NULL <= 0) && 0 <= #NULL) && \old(cond) <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && cond <= 1) && a <= 0) || (((((((((((((0 <= #NULL && 0 <= a) && N <= 2147483647) && i <= 0) && #NULL <= 0) && 0 <= \old(cond)) && 0 <= i) && 0 <= cond) && #NULL <= 0) && 0 <= #NULL) && \old(cond) <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && cond <= 1) && a <= 0)) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: ((((((((((((((0 <= #NULL && 0 <= a) && N <= 2147483647) && i <= 0) && 1 <= N) && #NULL <= 0) && 0 <= \old(cond)) && 0 <= i) && 0 <= cond) && #NULL <= 0) && 0 <= #NULL) && \old(cond) <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && cond <= 1) && a <= 0) || ((((((((((((((0 <= #NULL && 0 <= a) && 1 <= i) && N <= 2147483647) && i <= 2147483647) && 1 <= N) && #NULL <= 0) && 0 <= \old(cond)) && 0 <= cond) && #NULL <= 0) && 0 <= #NULL) && \old(cond) <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && cond <= 1) && a <= 0) RESULT: Ultimate proved your program to be correct! [2022-12-14 07:53:41,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a289a7ce-395f-4c40-aa46-01135014c750/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE