./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-crafted/xor1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 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_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/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_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/xor1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/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_0e63374d-7527-449a-9302-2498987633af/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 fa90627ffc045ef90595d49d60ca0f6095b53b667a9d0f028eb93e7bf4c6c579 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 05:16:24,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:16:24,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:16:24,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:16:24,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:16:24,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:16:24,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:16:24,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:16:24,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:16:24,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:16:24,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:16:24,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:16:24,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:16:24,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:16:24,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:16:24,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:16:24,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:16:24,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:16:24,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:16:24,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:16:24,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:16:24,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:16:24,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:16:24,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:16:24,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:16:24,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:16:24,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:16:24,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:16:24,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:16:24,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:16:24,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:16:24,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:16:24,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:16:24,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:16:24,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:16:24,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:16:24,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:16:24,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:16:24,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:16:24,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:16:24,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:16:24,986 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 05:16:25,002 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:16:25,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:16:25,002 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:16:25,002 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:16:25,003 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:16:25,003 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:16:25,003 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:16:25,003 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:16:25,003 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:16:25,004 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:16:25,004 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:16:25,004 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:16:25,004 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:16:25,004 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:16:25,004 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:16:25,004 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:16:25,004 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:16:25,005 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:16:25,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:16:25,005 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:16:25,005 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 05:16:25,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:16:25,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:16:25,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:16:25,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:16:25,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:16:25,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:16:25,006 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 05:16:25,006 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:16:25,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:16:25,006 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:16:25,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:16:25,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:16:25,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:16:25,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:16:25,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:16:25,007 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:16:25,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:16:25,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:16:25,008 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:16:25,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:16:25,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:16:25,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:16:25,008 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_0e63374d-7527-449a-9302-2498987633af/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa90627ffc045ef90595d49d60ca0f6095b53b667a9d0f028eb93e7bf4c6c579 [2022-12-14 05:16:25,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:16:25,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:16:25,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:16:25,202 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:16:25,202 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:16:25,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/array-crafted/xor1.i [2022-12-14 05:16:27,740 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:16:27,873 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:16:27,874 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/sv-benchmarks/c/array-crafted/xor1.i [2022-12-14 05:16:27,878 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/data/45f2117de/0281ec72c43d4430b404a9fd91a51d5a/FLAG64abc2a81 [2022-12-14 05:16:27,888 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/data/45f2117de/0281ec72c43d4430b404a9fd91a51d5a [2022-12-14 05:16:27,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:16:27,892 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:16:27,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:16:27,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:16:27,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:16:27,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:16:27" (1/1) ... [2022-12-14 05:16:27,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44e209a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:27, skipping insertion in model container [2022-12-14 05:16:27,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:16:27" (1/1) ... [2022-12-14 05:16:27,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:16:27,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:16:28,047 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_0e63374d-7527-449a-9302-2498987633af/sv-benchmarks/c/array-crafted/xor1.i[1285,1298] [2022-12-14 05:16:28,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:16:28,055 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:16:28,072 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_0e63374d-7527-449a-9302-2498987633af/sv-benchmarks/c/array-crafted/xor1.i[1285,1298] [2022-12-14 05:16:28,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:16:28,083 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:16:28,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:28 WrapperNode [2022-12-14 05:16:28,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:16:28,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:16:28,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:16:28,085 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:16:28,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:28" (1/1) ... [2022-12-14 05:16:28,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:28" (1/1) ... [2022-12-14 05:16:28,112 INFO L138 Inliner]: procedures = 16, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2022-12-14 05:16:28,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:16:28,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:16:28,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:16:28,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:16:28,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:28" (1/1) ... [2022-12-14 05:16:28,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:28" (1/1) ... [2022-12-14 05:16:28,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:28" (1/1) ... [2022-12-14 05:16:28,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:28" (1/1) ... [2022-12-14 05:16:28,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:28" (1/1) ... [2022-12-14 05:16:28,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:28" (1/1) ... [2022-12-14 05:16:28,132 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:28" (1/1) ... [2022-12-14 05:16:28,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:28" (1/1) ... [2022-12-14 05:16:28,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:16:28,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:16:28,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:16:28,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:16:28,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:28" (1/1) ... [2022-12-14 05:16:28,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:16:28,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:16:28,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:16:28,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:16:28,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:16:28,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:16:28,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 05:16:28,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 05:16:28,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:16:28,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:16:28,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 05:16:28,197 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2022-12-14 05:16:28,197 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2022-12-14 05:16:28,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 05:16:28,258 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:16:28,260 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:16:28,399 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:16:28,479 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:16:28,479 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-14 05:16:28,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:16:28 BoogieIcfgContainer [2022-12-14 05:16:28,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:16:28,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:16:28,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:16:28,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:16:28,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:16:27" (1/3) ... [2022-12-14 05:16:28,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b89dc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:16:28, skipping insertion in model container [2022-12-14 05:16:28,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:28" (2/3) ... [2022-12-14 05:16:28,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b89dc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:16:28, skipping insertion in model container [2022-12-14 05:16:28,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:16:28" (3/3) ... [2022-12-14 05:16:28,492 INFO L112 eAbstractionObserver]: Analyzing ICFG xor1.i [2022-12-14 05:16:28,512 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:16:28,512 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-14 05:16:28,554 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:16:28,561 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;@29c57e93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:16:28,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-14 05:16:28,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 16 states have (on average 1.6875) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:16:28,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 05:16:28,571 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:16:28,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 05:16:28,572 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 05:16:28,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:16:28,578 INFO L85 PathProgramCache]: Analyzing trace with hash 132879, now seen corresponding path program 1 times [2022-12-14 05:16:28,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:16:28,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330271637] [2022-12-14 05:16:28,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:28,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:16:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:28,793 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 05:16:28,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:16:28,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330271637] [2022-12-14 05:16:28,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330271637] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:16:28,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:16:28,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:16:28,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305353383] [2022-12-14 05:16:28,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:16:28,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:16:28,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:16:28,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:16:28,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:16:28,830 INFO L87 Difference]: Start difference. First operand has 29 states, 16 states have (on average 1.6875) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:16:28,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:16:28,896 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2022-12-14 05:16:28,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:16:28,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 05:16:28,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:16:28,906 INFO L225 Difference]: With dead ends: 57 [2022-12-14 05:16:28,906 INFO L226 Difference]: Without dead ends: 30 [2022-12-14 05:16:28,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:16:28,912 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:16:28,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 68 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:16:28,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-12-14 05:16:28,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-12-14 05:16:28,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:16:28,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-12-14 05:16:28,938 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 3 [2022-12-14 05:16:28,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:16:28,938 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-12-14 05:16:28,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:16:28,939 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-12-14 05:16:28,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 05:16:28,939 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:16:28,939 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-12-14 05:16:28,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:16:28,939 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 05:16:28,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:16:28,940 INFO L85 PathProgramCache]: Analyzing trace with hash -336320696, now seen corresponding path program 1 times [2022-12-14 05:16:28,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:16:28,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846767857] [2022-12-14 05:16:28,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:28,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:16:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:29,034 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 05:16:29,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:16:29,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846767857] [2022-12-14 05:16:29,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846767857] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:16:29,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173382487] [2022-12-14 05:16:29,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:29,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:16:29,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:16:29,037 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:16:29,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:16:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:29,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 05:16:29,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:16:29,128 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 05:16:29,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:16:29,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173382487] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:16:29,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:16:29,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-12-14 05:16:29,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310400591] [2022-12-14 05:16:29,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:16:29,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:16:29,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:16:29,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:16:29,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 05:16:29,131 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:16:29,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:16:29,179 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-12-14 05:16:29,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:16:29,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 05:16:29,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:16:29,181 INFO L225 Difference]: With dead ends: 30 [2022-12-14 05:16:29,181 INFO L226 Difference]: Without dead ends: 29 [2022-12-14 05:16:29,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 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 05:16:29,183 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 20 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:16:29,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:16:29,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-14 05:16:29,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-12-14 05:16:29,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 25 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:16:29,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-12-14 05:16:29,189 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 6 [2022-12-14 05:16:29,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:16:29,189 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-12-14 05:16:29,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:16:29,189 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-12-14 05:16:29,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 05:16:29,189 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:16:29,190 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2022-12-14 05:16:29,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:16:29,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:16:29,390 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 05:16:29,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:16:29,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1836006938, now seen corresponding path program 1 times [2022-12-14 05:16:29,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:16:29,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433420056] [2022-12-14 05:16:29,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:29,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:16:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:29,421 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 05:16:29,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:16:29,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433420056] [2022-12-14 05:16:29,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433420056] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:16:29,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:16:29,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:16:29,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267440086] [2022-12-14 05:16:29,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:16:29,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:16:29,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:16:29,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:16:29,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:16:29,423 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 05:16:29,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:16:29,441 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-12-14 05:16:29,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:16:29,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 05:16:29,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:16:29,442 INFO L225 Difference]: With dead ends: 29 [2022-12-14 05:16:29,443 INFO L226 Difference]: Without dead ends: 28 [2022-12-14 05:16:29,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:16:29,444 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 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 05:16:29,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:16:29,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-14 05:16:29,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2022-12-14 05:16:29,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.5625) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:16:29,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-12-14 05:16:29,447 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 7 [2022-12-14 05:16:29,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:16:29,447 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-12-14 05:16:29,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 05:16:29,447 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-12-14 05:16:29,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 05:16:29,448 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:16:29,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:16:29,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 05:16:29,448 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting xorErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 05:16:29,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:16:29,449 INFO L85 PathProgramCache]: Analyzing trace with hash 839661189, now seen corresponding path program 1 times [2022-12-14 05:16:29,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:16:29,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104536903] [2022-12-14 05:16:29,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:29,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:16:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:29,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:16:29,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:16:29,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104536903] [2022-12-14 05:16:29,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104536903] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:16:29,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437748947] [2022-12-14 05:16:29,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:29,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:16:29,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:16:29,500 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:16:29,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 05:16:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:29,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:16:29,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:16:29,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:16:29,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:16:29,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:16:29,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437748947] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:16:29,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [250438925] [2022-12-14 05:16:29,615 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:16:29,615 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:16:29,618 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:16:29,623 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:16:29,624 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:16:29,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:29,709 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:16:29,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:16:29,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:29,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:16:29,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:29,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 102 [2022-12-14 05:16:29,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:29,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 25 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 122 [2022-12-14 05:16:29,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:29,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:29,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:29,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:29,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:29,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:29,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:30,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:30,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:16:30,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:30,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:30,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:30,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:30,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:30,009 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:16:30,036 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-12-14 05:16:30,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 28 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 20 case distinctions, treesize of input 319 treesize of output 300 [2022-12-14 05:16:30,143 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 05:16:30,169 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2022-12-14 05:16:30,197 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:16:30,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [250438925] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:16:30,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:16:30,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 4] total 15 [2022-12-14 05:16:30,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703820814] [2022-12-14 05:16:30,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:16:30,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 05:16:30,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:16:30,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 05:16:30,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-12-14 05:16:30,520 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:16:30,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:16:30,748 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2022-12-14 05:16:30,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 05:16:30,748 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 05:16:30,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:16:30,749 INFO L225 Difference]: With dead ends: 49 [2022-12-14 05:16:30,749 INFO L226 Difference]: Without dead ends: 29 [2022-12-14 05:16:30,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-12-14 05:16:30,750 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 22 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:16:30,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 45 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:16:30,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-14 05:16:30,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-12-14 05:16:30,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 25 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:16:30,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-12-14 05:16:30,758 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 9 [2022-12-14 05:16:30,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:16:30,758 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-12-14 05:16:30,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:16:30,759 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-12-14 05:16:30,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 05:16:30,759 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:16:30,759 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:16:30,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 05:16:30,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-14 05:16:30,960 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting xorErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 05:16:30,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:16:30,960 INFO L85 PathProgramCache]: Analyzing trace with hash 457068783, now seen corresponding path program 1 times [2022-12-14 05:16:30,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:16:30,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329901944] [2022-12-14 05:16:30,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:30,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:16:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:31,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:16:31,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:16:31,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329901944] [2022-12-14 05:16:31,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329901944] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:16:31,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157999041] [2022-12-14 05:16:31,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:31,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:16:31,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:16:31,021 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:16:31,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 05:16:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:31,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:16:31,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:16:31,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:16:31,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:16:31,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:16:31,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157999041] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:16:31,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [734604861] [2022-12-14 05:16:31,099 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 05:16:31,099 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:16:31,099 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:16:31,100 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:16:31,100 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:16:31,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:31,122 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 05:16:31,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 05:16:31,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:31,144 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:16:31,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:16:31,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:31,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 102 [2022-12-14 05:16:31,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:31,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:31,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 25 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 117 [2022-12-14 05:16:31,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:31,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:31,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:31,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:31,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:31,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:31,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:31,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:16:31,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:31,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:31,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:31,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:31,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:31,369 INFO L321 Elim1Store]: treesize reduction 107, result has 6.1 percent of original size [2022-12-14 05:16:31,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 33 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 20 case distinctions, treesize of input 335 treesize of output 297 [2022-12-14 05:16:31,416 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 05:16:31,436 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2022-12-14 05:16:31,586 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:16:31,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [734604861] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:16:31,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:16:31,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 4] total 15 [2022-12-14 05:16:31,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483313278] [2022-12-14 05:16:31,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:16:31,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 05:16:31,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:16:31,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 05:16:31,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-12-14 05:16:31,900 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:16:32,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:16:32,095 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-12-14 05:16:32,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 05:16:32,096 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 05:16:32,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:16:32,096 INFO L225 Difference]: With dead ends: 29 [2022-12-14 05:16:32,096 INFO L226 Difference]: Without dead ends: 26 [2022-12-14 05:16:32,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-12-14 05:16:32,098 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:16:32,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 35 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:16:32,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-14 05:16:32,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-12-14 05:16:32,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:16:32,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-12-14 05:16:32,102 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 12 [2022-12-14 05:16:32,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:16:32,103 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-12-14 05:16:32,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:16:32,103 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-12-14 05:16:32,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 05:16:32,103 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:16:32,103 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:16:32,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 05:16:32,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:16:32,304 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 05:16:32,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:16:32,305 INFO L85 PathProgramCache]: Analyzing trace with hash -519270689, now seen corresponding path program 1 times [2022-12-14 05:16:32,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:16:32,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419963949] [2022-12-14 05:16:32,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:32,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:16:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:32,366 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 05:16:32,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:16:32,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419963949] [2022-12-14 05:16:32,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419963949] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:16:32,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962864937] [2022-12-14 05:16:32,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:32,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:16:32,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:16:32,368 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:16:32,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 05:16:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:32,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 05:16:32,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:16:32,422 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 05:16:32,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:16:32,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962864937] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:16:32,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:16:32,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-14 05:16:32,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180840041] [2022-12-14 05:16:32,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:16:32,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:16:32,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:16:32,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:16:32,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:16:32,424 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 05:16:32,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:16:32,440 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-12-14 05:16:32,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:16:32,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-12-14 05:16:32,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:16:32,441 INFO L225 Difference]: With dead ends: 32 [2022-12-14 05:16:32,441 INFO L226 Difference]: Without dead ends: 31 [2022-12-14 05:16:32,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:16:32,442 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:16:32,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 29 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:16:32,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-14 05:16:32,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2022-12-14 05:16:32,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 22 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:16:32,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-12-14 05:16:32,448 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 23 [2022-12-14 05:16:32,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:16:32,450 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-12-14 05:16:32,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 05:16:32,450 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-12-14 05:16:32,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 05:16:32,451 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:16:32,451 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:16:32,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 05:16:32,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 05:16:32,653 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 05:16:32,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:16:32,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1082477890, now seen corresponding path program 1 times [2022-12-14 05:16:32,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:16:32,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808453321] [2022-12-14 05:16:32,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:32,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:16:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:32,817 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 05:16:32,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:16:32,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808453321] [2022-12-14 05:16:32,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808453321] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:16:32,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984999974] [2022-12-14 05:16:32,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:32,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:16:32,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:16:32,819 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:16:32,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 05:16:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:32,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 05:16:32,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:16:32,881 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 05:16:32,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:16:32,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984999974] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:16:32,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:16:32,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-14 05:16:32,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146374738] [2022-12-14 05:16:32,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:16:32,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:16:32,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:16:32,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:16:32,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:16:32,883 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 05:16:32,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:16:32,905 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-12-14 05:16:32,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:16:32,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-12-14 05:16:32,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:16:32,907 INFO L225 Difference]: With dead ends: 32 [2022-12-14 05:16:32,907 INFO L226 Difference]: Without dead ends: 31 [2022-12-14 05:16:32,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:16:32,908 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:16:32,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 30 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:16:32,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-14 05:16:32,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2022-12-14 05:16:32,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.3) internal successors, (26), 23 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:16:32,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-12-14 05:16:32,914 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 24 [2022-12-14 05:16:32,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:16:32,914 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-12-14 05:16:32,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 05:16:32,914 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-12-14 05:16:32,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 05:16:32,915 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:16:32,915 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:16:32,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 05:16:33,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:16:33,116 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 05:16:33,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:16:33,116 INFO L85 PathProgramCache]: Analyzing trace with hash -802921601, now seen corresponding path program 1 times [2022-12-14 05:16:33,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:16:33,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307624600] [2022-12-14 05:16:33,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:33,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:16:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:33,185 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 05:16:33,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:16:33,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307624600] [2022-12-14 05:16:33,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307624600] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:16:33,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439952997] [2022-12-14 05:16:33,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:33,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:16:33,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:16:33,187 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:16:33,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 05:16:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:33,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:16:33,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:16:33,247 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 05:16:33,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:16:33,270 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 05:16:33,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439952997] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:16:33,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1132393426] [2022-12-14 05:16:33,273 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 05:16:33,273 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:16:33,274 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:16:33,274 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:16:33,274 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:16:33,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:33,305 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 05:16:33,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 05:16:33,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:33,326 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:16:33,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:16:33,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:33,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 102 [2022-12-14 05:16:33,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:33,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 25 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 122 [2022-12-14 05:16:33,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:33,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:33,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:33,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:33,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:33,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:33,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:33,500 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:16:33,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:33,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:33,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:33,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:33,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:33,504 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:16:33,522 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-12-14 05:16:33,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 27 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 20 case distinctions, treesize of input 319 treesize of output 300 [2022-12-14 05:16:33,597 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 05:16:33,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:33,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 05:16:33,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:33,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:16:33,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-12-14 05:16:33,778 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2022-12-14 05:16:33,889 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:16:36,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1132393426] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:16:36,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:16:36,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5, 4, 5] total 22 [2022-12-14 05:16:36,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674185256] [2022-12-14 05:16:36,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:16:36,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 05:16:36,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:16:36,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 05:16:36,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-12-14 05:16:36,505 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 14 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:16:36,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:16:36,797 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-12-14 05:16:36,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 05:16:36,798 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-12-14 05:16:36,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:16:36,798 INFO L225 Difference]: With dead ends: 31 [2022-12-14 05:16:36,798 INFO L226 Difference]: Without dead ends: 29 [2022-12-14 05:16:36,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2022-12-14 05:16:36,799 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 23 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:16:36,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 32 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:16:36,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-14 05:16:36,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-12-14 05:16:36,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 25 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:16:36,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-12-14 05:16:36,803 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 25 [2022-12-14 05:16:36,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:16:36,803 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-12-14 05:16:36,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:16:36,803 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-12-14 05:16:36,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 05:16:36,804 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:16:36,804 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:16:36,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 05:16:37,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:16:37,006 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 05:16:37,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:16:37,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1164473782, now seen corresponding path program 1 times [2022-12-14 05:16:37,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:16:37,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424624076] [2022-12-14 05:16:37,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:37,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:16:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:37,075 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:16:37,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:16:37,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424624076] [2022-12-14 05:16:37,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424624076] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:16:37,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787163015] [2022-12-14 05:16:37,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:37,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:16:37,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:16:37,077 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:16:37,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 05:16:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:37,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:16:37,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:16:37,143 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:16:37,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:16:37,163 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:16:37,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787163015] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:16:37,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [401853067] [2022-12-14 05:16:37,166 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-12-14 05:16:37,166 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:16:37,166 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:16:37,166 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:16:37,167 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:16:37,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:37,193 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 05:16:37,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 05:16:37,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:37,211 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:16:37,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:16:37,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:37,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 102 [2022-12-14 05:16:37,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:37,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:37,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 25 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 117 [2022-12-14 05:16:37,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:37,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:37,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:37,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:37,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:37,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:37,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:37,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:16:37,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:37,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:37,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:37,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:37,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:37,384 INFO L321 Elim1Store]: treesize reduction 107, result has 6.1 percent of original size [2022-12-14 05:16:37,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 33 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 20 case distinctions, treesize of input 335 treesize of output 297 [2022-12-14 05:16:37,424 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 05:16:37,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:37,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 05:16:37,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:37,570 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:16:37,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-12-14 05:16:37,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2022-12-14 05:16:37,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:37,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:37,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:37,636 INFO L321 Elim1Store]: treesize reduction 47, result has 35.6 percent of original size [2022-12-14 05:16:37,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 89 [2022-12-14 05:16:37,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-12-14 05:16:37,733 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2022-12-14 05:16:37,833 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:16:40,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [401853067] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:16:40,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:16:40,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [5, 4, 5] total 23 [2022-12-14 05:16:40,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839696587] [2022-12-14 05:16:40,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:16:40,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 05:16:40,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:16:40,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 05:16:40,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2022-12-14 05:16:40,912 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 15 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:16:41,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:16:41,200 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-12-14 05:16:41,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 05:16:41,201 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2022-12-14 05:16:41,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:16:41,201 INFO L225 Difference]: With dead ends: 29 [2022-12-14 05:16:41,202 INFO L226 Difference]: Without dead ends: 26 [2022-12-14 05:16:41,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-12-14 05:16:41,202 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:16:41,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:16:41,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-14 05:16:41,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-12-14 05:16:41,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:16:41,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-12-14 05:16:41,211 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 28 [2022-12-14 05:16:41,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:16:41,212 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-12-14 05:16:41,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:16:41,212 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-12-14 05:16:41,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-14 05:16:41,212 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:16:41,212 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:16:41,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 05:16:41,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:16:41,414 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 05:16:41,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:16:41,415 INFO L85 PathProgramCache]: Analyzing trace with hash -387459747, now seen corresponding path program 1 times [2022-12-14 05:16:41,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:16:41,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768640812] [2022-12-14 05:16:41,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:41,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:16:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:41,476 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 05:16:41,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:16:41,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768640812] [2022-12-14 05:16:41,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768640812] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:16:41,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444062846] [2022-12-14 05:16:41,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:41,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:16:41,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:16:41,477 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:16:41,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 05:16:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:41,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:16:41,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:16:41,550 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 05:16:41,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:16:41,575 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 05:16:41,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444062846] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:16:41,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1856447447] [2022-12-14 05:16:41,578 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-12-14 05:16:41,578 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:16:41,578 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:16:41,578 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:16:41,578 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:16:41,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:41,606 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:16:41,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:16:41,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:41,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:16:41,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:41,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 102 [2022-12-14 05:16:41,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:41,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 25 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 122 [2022-12-14 05:16:41,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:41,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:41,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:41,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:41,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:41,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:41,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:41,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:16:41,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:41,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:41,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:41,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:41,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:41,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:16:41,792 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-12-14 05:16:41,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 27 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 20 case distinctions, treesize of input 319 treesize of output 300 [2022-12-14 05:16:41,875 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 05:16:41,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:41,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 05:16:42,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:42,020 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:16:42,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-12-14 05:16:42,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:42,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:42,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:42,036 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:16:42,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2022-12-14 05:16:42,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:42,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:42,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:16:42,093 INFO L321 Elim1Store]: treesize reduction 47, result has 35.6 percent of original size [2022-12-14 05:16:42,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 89 [2022-12-14 05:16:42,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-12-14 05:16:42,181 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 12 for LOIs [2022-12-14 05:16:42,278 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:16:43,348 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1642#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~2#1|) (<= |ULTIMATE.start_main_~i~1#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_#t~post13#1|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-12-14 05:16:43,348 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:16:43,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:16:43,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 10 [2022-12-14 05:16:43,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554906449] [2022-12-14 05:16:43,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:16:43,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 05:16:43,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:16:43,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 05:16:43,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2022-12-14 05:16:43,349 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 05:16:43,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:16:43,397 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2022-12-14 05:16:43,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 05:16:43,398 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2022-12-14 05:16:43,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:16:43,398 INFO L225 Difference]: With dead ends: 53 [2022-12-14 05:16:43,398 INFO L226 Difference]: Without dead ends: 32 [2022-12-14 05:16:43,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 70 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-12-14 05:16:43,400 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:16:43,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 71 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:16:43,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-14 05:16:43,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-12-14 05:16:43,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:16:43,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-12-14 05:16:43,406 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 31 [2022-12-14 05:16:43,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:16:43,406 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-12-14 05:16:43,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 05:16:43,407 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-12-14 05:16:43,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 05:16:43,407 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:16:43,407 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:16:43,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-14 05:16:43,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 05:16:43,609 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 05:16:43,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:16:43,611 INFO L85 PathProgramCache]: Analyzing trace with hash -172233027, now seen corresponding path program 2 times [2022-12-14 05:16:43,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:16:43,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606175523] [2022-12-14 05:16:43,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:43,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:16:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:43,712 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-14 05:16:43,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:16:43,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606175523] [2022-12-14 05:16:43,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606175523] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:16:43,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283907043] [2022-12-14 05:16:43,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:16:43,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:16:43,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:16:43,714 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:16:43,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 05:16:43,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 05:16:43,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:16:43,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:16:43,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:16:43,776 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-14 05:16:43,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:16:43,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283907043] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:16:43,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:16:43,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-12-14 05:16:43,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522426593] [2022-12-14 05:16:43,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:16:43,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:16:43,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:16:43,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:16:43,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:16:43,778 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 05:16:43,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:16:43,803 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-12-14 05:16:43,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:16:43,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2022-12-14 05:16:43,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:16:43,804 INFO L225 Difference]: With dead ends: 32 [2022-12-14 05:16:43,804 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 05:16:43,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-14 05:16:43,805 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:16:43,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 32 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:16:43,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 05:16:43,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 05:16:43,806 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 05:16:43,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 05:16:43,806 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2022-12-14 05:16:43,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:16:43,807 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 05:16:43,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 05:16:43,807 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 05:16:43,807 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 05:16:43,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2022-12-14 05:16:43,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2022-12-14 05:16:43,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-12-14 05:16:43,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-12-14 05:16:43,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-12-14 05:16:43,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2022-12-14 05:16:43,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location xorErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-12-14 05:16:43,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location xorErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-12-14 05:16:43,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 05:16:44,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:16:44,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 05:16:44,345 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 47) no Hoare annotation was computed. [2022-12-14 05:16:44,345 INFO L895 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~i~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 4 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (exists ((v_xor_~res~0_BEFORE_RETURN_1 Int)) (= |ULTIMATE.start_main_~ret~0#1| (let ((.cse0 (mod v_xor_~res~0_BEFORE_RETURN_1 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))))) (= |#NULL.base| 0)) [2022-12-14 05:16:44,346 INFO L899 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2022-12-14 05:16:44,346 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 37) no Hoare annotation was computed. [2022-12-14 05:16:44,346 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2022-12-14 05:16:44,346 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2022-12-14 05:16:44,346 INFO L899 garLoopResultBuilder]: For program point L37-3(line 37) no Hoare annotation was computed. [2022-12-14 05:16:44,346 INFO L899 garLoopResultBuilder]: For program point L37-4(line 37) no Hoare annotation was computed. [2022-12-14 05:16:44,346 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 37) no Hoare annotation was computed. [2022-12-14 05:16:44,346 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 05:16:44,346 INFO L895 garLoopResultBuilder]: At program point L37-5(lines 37 39) the Hoare annotation is: (let ((.cse1 (= |ULTIMATE.start_main_~#x~0#1.offset| 0)) (.cse2 (= |#NULL.offset| 0)) (.cse4 (= |#NULL.base| 0))) (or (let ((.cse0 (select |#memory_int| 2)) (.cse3 (select |#memory_int| 1))) (and (= 7 (select |#length| 2)) (= (select .cse0 0) 120) (= 114 (select .cse0 2)) (= (select .cse0 5) 99) (= |ULTIMATE.start_main_~i~1#1| 0) (= 2 (select |#length| 1)) (= 111 (select .cse0 1)) (= (select |#valid| |ULTIMATE.start_main_~#x~0#1.base|) 1) (= (select .cse0 4) 46) .cse1 (= (select |#valid| 1) 1) (= (select .cse0 6) 0) (= 400 (select |#length| |ULTIMATE.start_main_~#x~0#1.base|)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) .cse2 (= (select .cse3 0) 48) (= 49 (select .cse0 3)) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#x~0#1.base|) (= (select .cse3 1) 0) (< 0 |#StackHeapBarrier|) .cse4)) (and (<= |ULTIMATE.start_main_~i~1#1| 2147483647) .cse1 (<= 1 |ULTIMATE.start_main_~i~1#1|) .cse2 (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) .cse4))) [2022-12-14 05:16:44,346 INFO L895 garLoopResultBuilder]: At program point L37-6(lines 37 39) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~i~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0)) [2022-12-14 05:16:44,347 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2022-12-14 05:16:44,347 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~i~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0)) [2022-12-14 05:16:44,347 INFO L902 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: true [2022-12-14 05:16:44,347 INFO L899 garLoopResultBuilder]: For program point L46-3(line 46) no Hoare annotation was computed. [2022-12-14 05:16:44,347 INFO L899 garLoopResultBuilder]: For program point L46-4(line 46) no Hoare annotation was computed. [2022-12-14 05:16:44,347 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 05:16:44,347 INFO L895 garLoopResultBuilder]: At program point L46-5(lines 46 48) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~i~2#1|))) (and (or .cse0 (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) |ULTIMATE.start_main_~#x~0#1.offset|) |ULTIMATE.start_main_~temp~0#1|)) (let ((.cse1 (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647)) (.cse2 (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|)) (.cse3 (<= |#NULL.offset| 0)) (.cse4 (<= |ULTIMATE.start_main_~i~1#1| 2147483647)) (.cse5 (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648))) (.cse6 (<= 0 |ULTIMATE.start_main_~#x~0#1.base|)) (.cse7 (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648))) (.cse8 (<= 0 |#NULL.offset|)) (.cse9 (<= |ULTIMATE.start_main_~#x~0#1.offset| 0))) (or (and .cse1 (<= |ULTIMATE.start_main_~i~2#1| 0) .cse2 (<= 0 |ULTIMATE.start_main_~i~2#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse0 (<= |ULTIMATE.start_main_~i~2#1| 2147483647) .cse6 .cse7 .cse8 .cse9))) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))) [2022-12-14 05:16:44,347 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 47) no Hoare annotation was computed. [2022-12-14 05:16:44,347 INFO L899 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2022-12-14 05:16:44,347 INFO L899 garLoopResultBuilder]: For program point L47-1(line 47) no Hoare annotation was computed. [2022-12-14 05:16:44,347 INFO L899 garLoopResultBuilder]: For program point L23-3(line 23) no Hoare annotation was computed. [2022-12-14 05:16:44,347 INFO L899 garLoopResultBuilder]: For program point L23-4(line 23) no Hoare annotation was computed. [2022-12-14 05:16:44,347 INFO L895 garLoopResultBuilder]: At program point L23-5(lines 23 25) the Hoare annotation is: (or (not (= |#NULL.offset| 0)) (and (<= 1 xor_~i~0) (<= xor_~x.offset 0) (<= 0 xor_~x.offset) (<= 0 xor_~x.base)) (not (= |#NULL.base| 0)) (not (<= 0 |#StackHeapBarrier|)) (not (<= 0 |xor_#in~x.base|)) (not (= |xor_#in~x.offset| 0))) [2022-12-14 05:16:44,347 INFO L899 garLoopResultBuilder]: For program point xorErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2022-12-14 05:16:44,347 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 18 27) the Hoare annotation is: true [2022-12-14 05:16:44,348 INFO L899 garLoopResultBuilder]: For program point xorErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2022-12-14 05:16:44,348 INFO L899 garLoopResultBuilder]: For program point xorEXIT(lines 18 27) no Hoare annotation was computed. [2022-12-14 05:16:44,350 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:16:44,352 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 05:16:44,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 05:16:44 BoogieIcfgContainer [2022-12-14 05:16:44,367 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 05:16:44,367 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 05:16:44,368 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 05:16:44,368 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 05:16:44,368 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:16:28" (3/4) ... [2022-12-14 05:16:44,370 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 05:16:44,374 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure xor [2022-12-14 05:16:44,376 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 34 nodes and edges [2022-12-14 05:16:44,376 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-12-14 05:16:44,376 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-14 05:16:44,377 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 05:16:44,377 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 05:16:44,400 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 05:16:44,400 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 05:16:44,400 INFO L158 Benchmark]: Toolchain (without parser) took 16508.64ms. Allocated memory was 125.8MB in the beginning and 220.2MB in the end (delta: 94.4MB). Free memory was 96.1MB in the beginning and 162.2MB in the end (delta: -66.0MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. [2022-12-14 05:16:44,400 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 125.8MB. Free memory is still 66.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:16:44,400 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.60ms. Allocated memory is still 125.8MB. Free memory was 95.8MB in the beginning and 85.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 05:16:44,401 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.87ms. Allocated memory is still 125.8MB. Free memory was 85.0MB in the beginning and 83.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 05:16:44,401 INFO L158 Benchmark]: Boogie Preprocessor took 21.34ms. Allocated memory is still 125.8MB. Free memory was 83.3MB in the beginning and 81.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 05:16:44,401 INFO L158 Benchmark]: RCFGBuilder took 347.23ms. Allocated memory is still 125.8MB. Free memory was 81.9MB in the beginning and 64.4MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 05:16:44,401 INFO L158 Benchmark]: TraceAbstraction took 15881.93ms. Allocated memory was 125.8MB in the beginning and 220.2MB in the end (delta: 94.4MB). Free memory was 63.7MB in the beginning and 165.3MB in the end (delta: -101.6MB). Peak memory consumption was 100.0MB. Max. memory is 16.1GB. [2022-12-14 05:16:44,401 INFO L158 Benchmark]: Witness Printer took 32.28ms. Allocated memory is still 220.2MB. Free memory was 165.3MB in the beginning and 162.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 05:16:44,402 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 125.8MB. Free memory is still 66.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 191.60ms. Allocated memory is still 125.8MB. Free memory was 95.8MB in the beginning and 85.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.87ms. Allocated memory is still 125.8MB. Free memory was 85.0MB in the beginning and 83.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.34ms. Allocated memory is still 125.8MB. Free memory was 83.3MB in the beginning and 81.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 347.23ms. Allocated memory is still 125.8MB. Free memory was 81.9MB in the beginning and 64.4MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 15881.93ms. Allocated memory was 125.8MB in the beginning and 220.2MB in the end (delta: 94.4MB). Free memory was 63.7MB in the beginning and 165.3MB in the end (delta: -101.6MB). Peak memory consumption was 100.0MB. Max. memory is 16.1GB. * Witness Printer took 32.28ms. Allocated memory is still 220.2MB. Free memory was 165.3MB in the beginning and 162.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 37]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 37]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 15.8s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 113 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 105 mSDsluCounter, 460 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 307 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 669 IncrementalHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 153 mSDtfsCounter, 669 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 447 GetRequests, 311 SyntacticMatches, 13 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 8.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=10, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 13 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 26 PreInvPairs, 38 NumberOfFragments, 369 HoareAnnotationTreeSize, 26 FomulaSimplifications, 48 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 738 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 400 NumberOfCodeBlocks, 375 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 480 ConstructedInterpolants, 0 QuantifiedInterpolants, 670 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1071 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 25 InterpolantComputations, 6 PerfectInterpolantSequences, 210/237 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: 2.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 55, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 136, TOOLS_POST_TIME: 1.9s, TOOLS_POST_CALL_APPLICATIONS: 14, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 8, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 158, TOOLS_QUANTIFIERELIM_TIME: 2.0s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 278, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 20, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 15, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 25, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 55, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 10, LOOP_SUMMARIZER_CACHE_MISSES: 10, LOOP_SUMMARIZER_OVERALL_TIME: 1.5s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.5s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 25, CALL_SUMMARIZER_APPLICATIONS: 8, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, 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: 874, DAG_COMPRESSION_RETAINED_NODES: 197, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((((((((((((((((7 == unknown-#length-unknown[2] && unknown-#memory_int-unknown[2][0] == 120) && 114 == unknown-#memory_int-unknown[2][2]) && unknown-#memory_int-unknown[2][5] == 99) && i == 0) && 2 == unknown-#length-unknown[1]) && 111 == unknown-#memory_int-unknown[2][1]) && \valid[x] == 1) && unknown-#memory_int-unknown[2][4] == 46) && x == 0) && \valid[1] == 1) && unknown-#memory_int-unknown[2][6] == 0) && 400 == unknown-#length-unknown[x]) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && 49 == unknown-#memory_int-unknown[2][3]) && unknown-#StackHeapBarrier-unknown < x) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((i <= 2147483647 && x == 0) && 1 <= i) && #NULL == 0) && 0 <= x) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((1 <= i || unknown-#memory_int-unknown[x][x] == temp) && (((((((((((ret2 <= 2147483647 && i <= 0) && 0 <= x) && 0 <= i) && #NULL <= 0) && i <= 2147483647) && 0 <= ret2 + 2147483648) && 0 <= x) && 0 <= ret + 2147483648) && 0 <= #NULL) && x <= 0) || ((((((((((ret2 <= 2147483647 && 0 <= x) && #NULL <= 0) && i <= 2147483647) && 0 <= ret2 + 2147483648) && 1 <= i) && i <= 2147483647) && 0 <= x) && 0 <= ret + 2147483648) && 0 <= #NULL) && x <= 0))) && ret <= 2147483647) && 0 <= unknown-#StackHeapBarrier-unknown) && 100 <= i) && #NULL == 0 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((!(#NULL == 0) || (((1 <= i && x <= 0) && 0 <= x) && 0 <= x)) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(0 <= x)) || !(x == 0) RESULT: Ultimate proved your program to be correct! [2022-12-14 05:16:44,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e63374d-7527-449a-9302-2498987633af/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