./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark24_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark24_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2c3b9571ba66fa4feec822ae5ad361f0264abe6d66c7b617817aa135932aee0a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 00:10:03,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:10:03,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:10:04,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:10:04,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:10:04,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:10:04,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:10:04,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:10:04,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:10:04,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:10:04,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:10:04,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:10:04,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:10:04,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:10:04,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:10:04,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:10:04,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:10:04,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:10:04,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:10:04,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:10:04,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:10:04,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:10:04,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:10:04,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:10:04,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:10:04,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:10:04,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:10:04,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:10:04,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:10:04,093 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:10:04,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:10:04,094 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:10:04,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:10:04,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:10:04,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:10:04,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:10:04,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:10:04,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:10:04,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:10:04,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:10:04,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:10:04,104 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 00:10:04,142 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:10:04,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:10:04,143 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:10:04,143 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:10:04,144 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:10:04,144 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:10:04,144 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:10:04,145 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:10:04,145 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:10:04,145 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:10:04,146 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:10:04,146 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:10:04,147 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:10:04,147 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:10:04,147 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:10:04,147 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:10:04,148 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:10:04,148 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:10:04,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:10:04,149 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 00:10:04,149 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 00:10:04,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:10:04,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 00:10:04,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:10:04,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:10:04,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:10:04,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:10:04,150 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 00:10:04,151 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 00:10:04,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:10:04,151 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:10:04,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:10:04,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:10:04,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:10:04,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:10:04,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:10:04,153 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:10:04,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:10:04,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:10:04,153 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:10:04,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:10:04,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:10:04,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:10:04,154 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_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c3b9571ba66fa4feec822ae5ad361f0264abe6d66c7b617817aa135932aee0a [2022-11-22 00:10:04,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:10:04,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:10:04,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:10:04,489 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:10:04,490 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:10:04,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/loop-zilu/benchmark24_conjunctive.i [2022-11-22 00:10:07,626 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:10:07,831 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:10:07,832 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/sv-benchmarks/c/loop-zilu/benchmark24_conjunctive.i [2022-11-22 00:10:07,838 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/data/644d748ce/757d3c2ab6bc4fbf859efb8a427891ef/FLAG95fe17513 [2022-11-22 00:10:07,860 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/data/644d748ce/757d3c2ab6bc4fbf859efb8a427891ef [2022-11-22 00:10:07,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:10:07,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:10:07,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:10:07,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:10:07,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:10:07,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:10:07" (1/1) ... [2022-11-22 00:10:07,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41558f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:10:07, skipping insertion in model container [2022-11-22 00:10:07,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:10:07" (1/1) ... [2022-11-22 00:10:07,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:10:07,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:10:08,065 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_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/sv-benchmarks/c/loop-zilu/benchmark24_conjunctive.i[873,886] [2022-11-22 00:10:08,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:10:08,086 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:10:08,098 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_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/sv-benchmarks/c/loop-zilu/benchmark24_conjunctive.i[873,886] [2022-11-22 00:10:08,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:10:08,115 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:10:08,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:10:08 WrapperNode [2022-11-22 00:10:08,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:10:08,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:10:08,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:10:08,117 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:10:08,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:10:08" (1/1) ... [2022-11-22 00:10:08,132 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:10:08" (1/1) ... [2022-11-22 00:10:08,149 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2022-11-22 00:10:08,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:10:08,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:10:08,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:10:08,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:10:08,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:10:08" (1/1) ... [2022-11-22 00:10:08,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:10:08" (1/1) ... [2022-11-22 00:10:08,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:10:08" (1/1) ... [2022-11-22 00:10:08,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:10:08" (1/1) ... [2022-11-22 00:10:08,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:10:08" (1/1) ... [2022-11-22 00:10:08,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:10:08" (1/1) ... [2022-11-22 00:10:08,185 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:10:08" (1/1) ... [2022-11-22 00:10:08,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:10:08" (1/1) ... [2022-11-22 00:10:08,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:10:08,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:10:08,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:10:08,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:10:08,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:10:08" (1/1) ... [2022-11-22 00:10:08,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:10:08,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:10:08,217 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:10:08,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:10:08,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:10:08,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:10:08,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:10:08,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:10:08,338 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:10:08,340 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:10:08,552 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:10:08,580 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:10:08,580 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 00:10:08,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:10:08 BoogieIcfgContainer [2022-11-22 00:10:08,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:10:08,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:10:08,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:10:08,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:10:08,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:10:07" (1/3) ... [2022-11-22 00:10:08,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18668930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:10:08, skipping insertion in model container [2022-11-22 00:10:08,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:10:08" (2/3) ... [2022-11-22 00:10:08,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18668930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:10:08, skipping insertion in model container [2022-11-22 00:10:08,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:10:08" (3/3) ... [2022-11-22 00:10:08,593 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark24_conjunctive.i [2022-11-22 00:10:08,612 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:10:08,612 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-22 00:10:08,660 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:10:08,667 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;@5a951195, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:10:08,667 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-22 00:10:08,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:08,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 00:10:08,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:08,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 00:10:08,679 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 00:10:08,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:08,685 INFO L85 PathProgramCache]: Analyzing trace with hash 2301147, now seen corresponding path program 1 times [2022-11-22 00:10:08,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:08,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497082155] [2022-11-22 00:10:08,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:08,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:08,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:08,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:08,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497082155] [2022-11-22 00:10:08,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497082155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:10:08,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:10:08,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:10:08,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015007438] [2022-11-22 00:10:08,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:10:08,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:10:08,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:09,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:10:09,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:10:09,052 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:09,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:09,157 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2022-11-22 00:10:09,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:10:09,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-22 00:10:09,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:09,194 INFO L225 Difference]: With dead ends: 21 [2022-11-22 00:10:09,194 INFO L226 Difference]: Without dead ends: 18 [2022-11-22 00:10:09,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:10:09,204 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 20 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:09,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 14 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:10:09,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-22 00:10:09,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-22 00:10:09,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:09,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-22 00:10:09,262 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 4 [2022-11-22 00:10:09,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:09,263 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-22 00:10:09,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:09,263 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-22 00:10:09,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 00:10:09,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:09,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 00:10:09,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:10:09,264 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 00:10:09,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:09,265 INFO L85 PathProgramCache]: Analyzing trace with hash 2302150, now seen corresponding path program 1 times [2022-11-22 00:10:09,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:09,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118204145] [2022-11-22 00:10:09,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:09,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:09,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:09,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:09,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118204145] [2022-11-22 00:10:09,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118204145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:10:09,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:10:09,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:10:09,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712638156] [2022-11-22 00:10:09,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:10:09,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:10:09,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:09,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:10:09,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:10:09,333 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:09,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:09,410 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2022-11-22 00:10:09,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:10:09,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-22 00:10:09,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:09,412 INFO L225 Difference]: With dead ends: 30 [2022-11-22 00:10:09,413 INFO L226 Difference]: Without dead ends: 29 [2022-11-22 00:10:09,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:10:09,416 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 16 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:09,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 20 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:10:09,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-22 00:10:09,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2022-11-22 00:10:09,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:09,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-11-22 00:10:09,430 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 4 [2022-11-22 00:10:09,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:09,431 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-11-22 00:10:09,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:09,433 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-11-22 00:10:09,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 00:10:09,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:09,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 00:10:09,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:10:09,435 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 00:10:09,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:09,449 INFO L85 PathProgramCache]: Analyzing trace with hash 71335607, now seen corresponding path program 1 times [2022-11-22 00:10:09,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:09,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861859249] [2022-11-22 00:10:09,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:09,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:09,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:09,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:09,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861859249] [2022-11-22 00:10:09,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861859249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:10:09,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:10:09,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:10:09,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86660241] [2022-11-22 00:10:09,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:10:09,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:10:09,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:09,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:10:09,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:10:09,509 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:09,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:09,559 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2022-11-22 00:10:09,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:10:09,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 00:10:09,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:09,560 INFO L225 Difference]: With dead ends: 29 [2022-11-22 00:10:09,560 INFO L226 Difference]: Without dead ends: 28 [2022-11-22 00:10:09,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:10:09,562 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 15 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 [2022-11-22 00:10:09,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 15 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:10:09,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-22 00:10:09,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2022-11-22 00:10:09,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:09,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-11-22 00:10:09,568 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 5 [2022-11-22 00:10:09,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:09,568 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-11-22 00:10:09,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:09,569 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-11-22 00:10:09,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 00:10:09,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:09,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 00:10:09,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:10:09,570 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 00:10:09,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:09,571 INFO L85 PathProgramCache]: Analyzing trace with hash 71366711, now seen corresponding path program 1 times [2022-11-22 00:10:09,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:09,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183806131] [2022-11-22 00:10:09,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:09,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:09,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:09,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:09,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183806131] [2022-11-22 00:10:09,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183806131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:10:09,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:10:09,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:10:09,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735031021] [2022-11-22 00:10:09,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:10:09,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:10:09,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:09,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:10:09,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:10:09,628 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:09,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:09,650 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2022-11-22 00:10:09,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:10:09,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 00:10:09,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:09,651 INFO L225 Difference]: With dead ends: 28 [2022-11-22 00:10:09,652 INFO L226 Difference]: Without dead ends: 27 [2022-11-22 00:10:09,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:10:09,653 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:09,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 22 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:10:09,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-22 00:10:09,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-11-22 00:10:09,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.5) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:09,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-11-22 00:10:09,659 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 5 [2022-11-22 00:10:09,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:09,659 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-11-22 00:10:09,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:09,660 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-11-22 00:10:09,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 00:10:09,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:09,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 00:10:09,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:10:09,661 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 00:10:09,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:09,662 INFO L85 PathProgramCache]: Analyzing trace with hash -2083563427, now seen corresponding path program 1 times [2022-11-22 00:10:09,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:09,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531305480] [2022-11-22 00:10:09,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:09,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:09,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:09,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:09,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531305480] [2022-11-22 00:10:09,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531305480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:10:09,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:10:09,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:10:09,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087994634] [2022-11-22 00:10:09,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:10:09,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:10:09,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:09,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:10:09,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:10:09,700 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:09,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:09,731 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2022-11-22 00:10:09,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:10:09,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-22 00:10:09,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:09,732 INFO L225 Difference]: With dead ends: 30 [2022-11-22 00:10:09,733 INFO L226 Difference]: Without dead ends: 29 [2022-11-22 00:10:09,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:10:09,735 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:09,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 22 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:10:09,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-22 00:10:09,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2022-11-22 00:10:09,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:09,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-11-22 00:10:09,741 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 6 [2022-11-22 00:10:09,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:09,741 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-11-22 00:10:09,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:09,742 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-11-22 00:10:09,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 00:10:09,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:09,742 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 00:10:09,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:10:09,743 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 00:10:09,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:09,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2082599192, now seen corresponding path program 1 times [2022-11-22 00:10:09,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:09,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318954116] [2022-11-22 00:10:09,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:09,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:09,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:09,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:09,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318954116] [2022-11-22 00:10:09,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318954116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:10:09,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:10:09,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 00:10:09,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156122430] [2022-11-22 00:10:09,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:10:09,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:10:09,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:09,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:10:09,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:10:09,773 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:09,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:09,783 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2022-11-22 00:10:09,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:10:09,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-22 00:10:09,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:09,784 INFO L225 Difference]: With dead ends: 24 [2022-11-22 00:10:09,784 INFO L226 Difference]: Without dead ends: 23 [2022-11-22 00:10:09,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:10:09,785 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:09,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 11 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:10:09,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-22 00:10:09,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-22 00:10:09,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.411764705882353) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:09,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-11-22 00:10:09,790 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 6 [2022-11-22 00:10:09,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:09,791 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-11-22 00:10:09,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:09,791 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-11-22 00:10:09,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 00:10:09,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:09,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:10:09,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:10:09,792 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 00:10:09,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:09,793 INFO L85 PathProgramCache]: Analyzing trace with hash -165956743, now seen corresponding path program 1 times [2022-11-22 00:10:09,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:09,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467982473] [2022-11-22 00:10:09,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:09,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:09,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:09,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:09,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467982473] [2022-11-22 00:10:09,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467982473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:10:09,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:10:09,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 00:10:09,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524546785] [2022-11-22 00:10:09,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:10:09,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:10:09,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:09,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:10:09,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:10:09,836 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:09,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:09,860 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-11-22 00:10:09,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:10:09,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 00:10:09,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:09,861 INFO L225 Difference]: With dead ends: 23 [2022-11-22 00:10:09,862 INFO L226 Difference]: Without dead ends: 22 [2022-11-22 00:10:09,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:10:09,863 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:09,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 9 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:10:09,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-22 00:10:09,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-22 00:10:09,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:09,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-11-22 00:10:09,867 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 7 [2022-11-22 00:10:09,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:09,868 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-11-22 00:10:09,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:09,868 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-11-22 00:10:09,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 00:10:09,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:09,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:10:09,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:10:09,869 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 00:10:09,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:09,870 INFO L85 PathProgramCache]: Analyzing trace with hash -136065447, now seen corresponding path program 1 times [2022-11-22 00:10:09,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:09,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864681618] [2022-11-22 00:10:09,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:09,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:09,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:09,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:09,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864681618] [2022-11-22 00:10:09,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864681618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:10:09,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:10:09,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:10:09,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216794050] [2022-11-22 00:10:09,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:10:09,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:10:09,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:09,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:10:09,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:10:09,928 INFO L87 Difference]: Start difference. First operand 22 states and 23 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) [2022-11-22 00:10:09,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:09,941 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-11-22 00:10:09,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:10:09,942 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 [2022-11-22 00:10:09,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:09,942 INFO L225 Difference]: With dead ends: 22 [2022-11-22 00:10:09,943 INFO L226 Difference]: Without dead ends: 17 [2022-11-22 00:10:09,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:10:09,944 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:09,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:10:09,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-22 00:10:09,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-22 00:10:09,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:09,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-11-22 00:10:09,955 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2022-11-22 00:10:09,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:09,955 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-11-22 00:10:09,956 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) [2022-11-22 00:10:09,956 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-11-22 00:10:09,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 00:10:09,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:09,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:10:09,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 00:10:09,957 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 00:10:09,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:09,957 INFO L85 PathProgramCache]: Analyzing trace with hash -570637594, now seen corresponding path program 1 times [2022-11-22 00:10:09,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:09,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815948309] [2022-11-22 00:10:09,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:09,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:10,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:10,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:10,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815948309] [2022-11-22 00:10:10,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815948309] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:10:10,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747990107] [2022-11-22 00:10:10,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:10,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:10:10,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:10:10,051 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:10:10,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:10:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:10,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 00:10:10,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:10:10,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:10,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:10:10,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:10,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747990107] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:10:10,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [801383223] [2022-11-22 00:10:10,425 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 00:10:10,425 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:10:10,432 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:10:10,437 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:10:10,438 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:10:10,946 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:10:11,907 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '528#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |#NULL.offset| 0) (<= 2 |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (not (<= (* 2 |ULTIMATE.start_main_~k~0#1|) 2147483647)) (not (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-22 00:10:11,907 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:10:11,908 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:10:11,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2022-11-22 00:10:11,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743908326] [2022-11-22 00:10:11,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:10:11,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 00:10:11,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:11,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 00:10:11,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-11-22 00:10:11,913 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:12,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:12,135 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2022-11-22 00:10:12,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 00:10:12,136 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-22 00:10:12,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:12,140 INFO L225 Difference]: With dead ends: 31 [2022-11-22 00:10:12,140 INFO L226 Difference]: Without dead ends: 30 [2022-11-22 00:10:12,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2022-11-22 00:10:12,141 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 25 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:12,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 8 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:10:12,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-22 00:10:12,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2022-11-22 00:10:12,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.380952380952381) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:12,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-11-22 00:10:12,154 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 9 [2022-11-22 00:10:12,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:12,156 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-11-22 00:10:12,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:12,157 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-11-22 00:10:12,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 00:10:12,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:12,157 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-22 00:10:12,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 00:10:12,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:10:12,363 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 00:10:12,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:12,364 INFO L85 PathProgramCache]: Analyzing trace with hash -509927273, now seen corresponding path program 1 times [2022-11-22 00:10:12,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:12,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382564406] [2022-11-22 00:10:12,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:12,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:12,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:12,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:12,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382564406] [2022-11-22 00:10:12,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382564406] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:10:12,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681196527] [2022-11-22 00:10:12,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:12,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:10:12,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:10:12,456 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:10:12,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 00:10:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:12,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 00:10:12,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:10:12,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:12,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:10:12,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:12,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681196527] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:10:12,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [862289112] [2022-11-22 00:10:12,607 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 00:10:12,607 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:10:12,608 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:10:12,608 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:10:12,608 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:10:12,854 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:10:13,460 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '672#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (< (+ 2147483647 |ULTIMATE.start_main_#t~post4#1|) 0) (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (<= 2 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~k~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:10:13,460 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:10:13,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:10:13,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-22 00:10:13,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224365526] [2022-11-22 00:10:13,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:10:13,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 00:10:13,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:13,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 00:10:13,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-11-22 00:10:13,462 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:13,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:13,656 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2022-11-22 00:10:13,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 00:10:13,656 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-22 00:10:13,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:13,657 INFO L225 Difference]: With dead ends: 41 [2022-11-22 00:10:13,657 INFO L226 Difference]: Without dead ends: 37 [2022-11-22 00:10:13,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2022-11-22 00:10:13,658 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 32 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:13,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 21 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:10:13,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-22 00:10:13,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2022-11-22 00:10:13,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:13,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-11-22 00:10:13,664 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 10 [2022-11-22 00:10:13,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:13,665 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-11-22 00:10:13,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:13,665 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-11-22 00:10:13,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 00:10:13,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:13,665 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-11-22 00:10:13,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 00:10:13,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 00:10:13,866 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 00:10:13,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:13,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1372123773, now seen corresponding path program 1 times [2022-11-22 00:10:13,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:13,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467691503] [2022-11-22 00:10:13,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:13,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:13,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:13,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:13,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467691503] [2022-11-22 00:10:13,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467691503] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:10:13,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114900397] [2022-11-22 00:10:13,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:13,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:10:13,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:10:13,912 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:10:13,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 00:10:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:13,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 00:10:13,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:10:13,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:13,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:10:14,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:14,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114900397] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:10:14,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1802591007] [2022-11-22 00:10:14,027 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 00:10:14,028 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:10:14,029 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:10:14,029 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:10:14,029 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:10:14,230 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:10:14,696 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '841#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (< 2147483645 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:10:14,696 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:10:14,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:10:14,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-22 00:10:14,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539047755] [2022-11-22 00:10:14,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:10:14,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:10:14,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:14,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:10:14,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-22 00:10:14,697 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:14,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:14,734 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2022-11-22 00:10:14,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:10:14,735 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-22 00:10:14,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:14,735 INFO L225 Difference]: With dead ends: 40 [2022-11-22 00:10:14,736 INFO L226 Difference]: Without dead ends: 39 [2022-11-22 00:10:14,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-22 00:10:14,737 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 14 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:14,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 27 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:10:14,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-22 00:10:14,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2022-11-22 00:10:14,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.206896551724138) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:14,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-11-22 00:10:14,747 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 11 [2022-11-22 00:10:14,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:14,747 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-11-22 00:10:14,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:14,748 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-11-22 00:10:14,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-22 00:10:14,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:14,748 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-22 00:10:14,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 00:10:14,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:10:14,960 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 00:10:14,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:14,960 INFO L85 PathProgramCache]: Analyzing trace with hash -2030361545, now seen corresponding path program 1 times [2022-11-22 00:10:14,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:14,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978455443] [2022-11-22 00:10:14,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:14,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:15,091 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:15,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:15,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978455443] [2022-11-22 00:10:15,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978455443] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:10:15,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655478730] [2022-11-22 00:10:15,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:15,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:10:15,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:10:15,093 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:10:15,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 00:10:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:15,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 00:10:15,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:10:15,219 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:15,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:10:15,341 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:15,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655478730] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:10:15,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1168220216] [2022-11-22 00:10:15,343 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 00:10:15,344 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:10:15,344 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:10:15,344 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:10:15,344 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:10:15,546 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:10:16,679 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1032#(and (<= 0 |#NULL.base|) (< (+ (* 2 |ULTIMATE.start_main_~k~0#1|) 2147483648) 0) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.offset| 0) (<= 2 |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-22 00:10:16,679 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:10:16,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:10:16,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-11-22 00:10:16,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554048170] [2022-11-22 00:10:16,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:10:16,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-22 00:10:16,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:16,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-22 00:10:16,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2022-11-22 00:10:16,681 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:16,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:16,882 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-11-22 00:10:16,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 00:10:16,883 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-22 00:10:16,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:16,883 INFO L225 Difference]: With dead ends: 33 [2022-11-22 00:10:16,883 INFO L226 Difference]: Without dead ends: 29 [2022-11-22 00:10:16,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=232, Invalid=958, Unknown=0, NotChecked=0, Total=1190 [2022-11-22 00:10:16,884 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 46 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:16,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 2 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:10:16,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-22 00:10:16,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-22 00:10:16,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:16,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2022-11-22 00:10:16,894 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 15 [2022-11-22 00:10:16,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:16,895 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2022-11-22 00:10:16,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:16,895 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2022-11-22 00:10:16,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-22 00:10:16,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:16,896 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1] [2022-11-22 00:10:16,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 00:10:17,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-22 00:10:17,096 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 00:10:17,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:17,097 INFO L85 PathProgramCache]: Analyzing trace with hash -541004058, now seen corresponding path program 2 times [2022-11-22 00:10:17,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:17,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584627070] [2022-11-22 00:10:17,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:17,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:17,235 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:17,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:17,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584627070] [2022-11-22 00:10:17,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584627070] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:10:17,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064105821] [2022-11-22 00:10:17,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 00:10:17,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:10:17,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:10:17,239 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:10:17,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 00:10:17,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-22 00:10:17,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:10:17,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-22 00:10:17,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:10:17,502 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:17,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:10:17,787 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:17,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064105821] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:10:17,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1056735940] [2022-11-22 00:10:17,789 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 00:10:17,789 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:10:17,789 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:10:17,790 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:10:17,790 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:10:17,986 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:10:19,088 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1270#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |#NULL.offset| 0) (<= 2 |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (not (<= (* 2 |ULTIMATE.start_main_~k~0#1|) 2147483647)) (not (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-22 00:10:19,088 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:10:19,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:10:19,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 31 [2022-11-22 00:10:19,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453695350] [2022-11-22 00:10:19,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:10:19,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-22 00:10:19,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:19,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-22 00:10:19,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1229, Unknown=0, NotChecked=0, Total=1482 [2022-11-22 00:10:19,091 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 32 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:19,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:19,581 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2022-11-22 00:10:19,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-22 00:10:19,581 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 32 states have internal predecessors, (54), 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 19 [2022-11-22 00:10:19,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:19,582 INFO L225 Difference]: With dead ends: 46 [2022-11-22 00:10:19,582 INFO L226 Difference]: Without dead ends: 43 [2022-11-22 00:10:19,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 996 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=469, Invalid=1981, Unknown=0, NotChecked=0, Total=2450 [2022-11-22 00:10:19,584 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 76 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:19,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 6 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:10:19,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-22 00:10:19,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2022-11-22 00:10:19,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:19,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2022-11-22 00:10:19,590 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 19 [2022-11-22 00:10:19,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:19,591 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2022-11-22 00:10:19,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:19,591 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2022-11-22 00:10:19,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-22 00:10:19,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:19,592 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1] [2022-11-22 00:10:19,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 00:10:19,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-22 00:10:19,798 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 00:10:19,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:19,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1171062877, now seen corresponding path program 2 times [2022-11-22 00:10:19,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:19,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562129391] [2022-11-22 00:10:19,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:19,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:19,879 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:19,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:19,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562129391] [2022-11-22 00:10:19,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562129391] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:10:19,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077386181] [2022-11-22 00:10:19,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 00:10:19,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:10:19,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:10:19,881 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:10:19,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 00:10:19,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-22 00:10:19,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:10:19,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 00:10:19,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:10:19,973 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:19,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:10:20,062 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:20,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077386181] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:10:20,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1676137294] [2022-11-22 00:10:20,065 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 00:10:20,065 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:10:20,065 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:10:20,066 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:10:20,066 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:10:20,206 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:10:20,773 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1564#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (< 2147483645 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:10:20,774 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:10:20,774 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:10:20,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-22 00:10:20,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873972755] [2022-11-22 00:10:20,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:10:20,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 00:10:20,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:20,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 00:10:20,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-22 00:10:20,775 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:20,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:20,844 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2022-11-22 00:10:20,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 00:10:20,845 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 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 26 [2022-11-22 00:10:20,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:20,846 INFO L225 Difference]: With dead ends: 66 [2022-11-22 00:10:20,846 INFO L226 Difference]: Without dead ends: 65 [2022-11-22 00:10:20,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 61 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-22 00:10:20,848 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:20,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 32 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:10:20,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-22 00:10:20,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2022-11-22 00:10:20,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 57 states have (on average 1.087719298245614) internal successors, (62), 58 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:20,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2022-11-22 00:10:20,865 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 26 [2022-11-22 00:10:20,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:20,868 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2022-11-22 00:10:20,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:20,869 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2022-11-22 00:10:20,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-22 00:10:20,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:20,871 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1] [2022-11-22 00:10:20,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 00:10:21,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:10:21,076 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 00:10:21,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:21,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1925953818, now seen corresponding path program 3 times [2022-11-22 00:10:21,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:21,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432432545] [2022-11-22 00:10:21,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:21,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:21,422 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:21,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:21,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432432545] [2022-11-22 00:10:21,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432432545] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:10:21,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714909282] [2022-11-22 00:10:21,423 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 00:10:21,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:10:21,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:10:21,432 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:10:21,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 00:10:21,487 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 00:10:21,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:10:21,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-22 00:10:21,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:10:22,089 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:22,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:10:22,973 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:22,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714909282] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:10:22,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [755806422] [2022-11-22 00:10:22,975 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 00:10:22,975 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:10:22,976 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:10:22,976 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:10:22,976 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:10:23,131 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:10:24,908 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2009#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |#NULL.offset| 0) (<= 2 |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (not (<= (* 2 |ULTIMATE.start_main_~k~0#1|) 2147483647)) (not (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-22 00:10:24,909 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:10:24,909 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:10:24,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 24, 24] total 63 [2022-11-22 00:10:24,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392163482] [2022-11-22 00:10:24,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:10:24,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-22 00:10:24,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:24,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-22 00:10:24,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=827, Invalid=4143, Unknown=0, NotChecked=0, Total=4970 [2022-11-22 00:10:24,913 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 64 states, 63 states have (on average 1.8095238095238095) internal successors, (114), 64 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:26,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:26,979 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2022-11-22 00:10:26,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-22 00:10:26,980 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.8095238095238095) internal successors, (114), 64 states have internal predecessors, (114), 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 39 [2022-11-22 00:10:26,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:26,980 INFO L225 Difference]: With dead ends: 88 [2022-11-22 00:10:26,980 INFO L226 Difference]: Without dead ends: 85 [2022-11-22 00:10:26,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 63 SyntacticMatches, 7 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4382 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1851, Invalid=7655, Unknown=0, NotChecked=0, Total=9506 [2022-11-22 00:10:26,984 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 187 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:26,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 11 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 00:10:26,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-22 00:10:26,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2022-11-22 00:10:26,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 79 states have (on average 1.0759493670886076) internal successors, (85), 80 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:26,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2022-11-22 00:10:26,993 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 39 [2022-11-22 00:10:26,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:26,994 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2022-11-22 00:10:26,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.8095238095238095) internal successors, (114), 64 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:26,994 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2022-11-22 00:10:26,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-22 00:10:26,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:26,995 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1] [2022-11-22 00:10:27,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 00:10:27,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-22 00:10:27,207 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 00:10:27,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:27,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1141767261, now seen corresponding path program 3 times [2022-11-22 00:10:27,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:27,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679837250] [2022-11-22 00:10:27,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:27,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:27,393 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:27,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:27,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679837250] [2022-11-22 00:10:27,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679837250] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:10:27,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250529604] [2022-11-22 00:10:27,394 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 00:10:27,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:10:27,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:10:27,399 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:10:27,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 00:10:27,471 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 00:10:27,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:10:27,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 00:10:27,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:10:27,551 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:27,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:10:27,802 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:27,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250529604] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:10:27,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [114169910] [2022-11-22 00:10:27,804 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 00:10:27,804 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:10:27,804 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:10:27,804 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:10:27,805 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:10:27,958 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:10:28,848 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2625#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (< 2147483645 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:10:28,848 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:10:28,848 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:10:28,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-11-22 00:10:28,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600347308] [2022-11-22 00:10:28,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:10:28,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-22 00:10:28,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:28,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-22 00:10:28,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=578, Unknown=0, NotChecked=0, Total=870 [2022-11-22 00:10:28,851 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand has 24 states, 23 states have (on average 4.826086956521739) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:28,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:28,980 INFO L93 Difference]: Finished difference Result 134 states and 145 transitions. [2022-11-22 00:10:28,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-22 00:10:28,981 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.826086956521739) internal successors, (111), 24 states have internal predecessors, (111), 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 56 [2022-11-22 00:10:28,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:28,982 INFO L225 Difference]: With dead ends: 134 [2022-11-22 00:10:28,982 INFO L226 Difference]: Without dead ends: 133 [2022-11-22 00:10:28,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 139 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=292, Invalid=578, Unknown=0, NotChecked=0, Total=870 [2022-11-22 00:10:28,983 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 61 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:28,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 57 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:10:28,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-22 00:10:28,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 119. [2022-11-22 00:10:28,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 117 states have (on average 1.0769230769230769) internal successors, (126), 118 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:28,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2022-11-22 00:10:28,995 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 56 [2022-11-22 00:10:28,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:28,996 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2022-11-22 00:10:28,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.826086956521739) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:28,996 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2022-11-22 00:10:28,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-22 00:10:28,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:28,998 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1] [2022-11-22 00:10:29,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 00:10:29,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-22 00:10:29,211 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 00:10:29,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:29,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1530464538, now seen corresponding path program 4 times [2022-11-22 00:10:29,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:29,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113464946] [2022-11-22 00:10:29,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:29,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:30,385 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:30,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:30,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113464946] [2022-11-22 00:10:30,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113464946] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:10:30,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410026106] [2022-11-22 00:10:30,386 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 00:10:30,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:10:30,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:10:30,387 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:10:30,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 00:10:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:30,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-22 00:10:30,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:10:32,177 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:32,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:10:34,953 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:34,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410026106] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:10:34,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [253594427] [2022-11-22 00:10:34,956 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 00:10:34,956 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:10:34,956 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:10:34,956 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:10:34,956 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:10:35,123 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:10:39,323 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3526#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |#NULL.offset| 0) (<= 2 |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (not (<= (* 2 |ULTIMATE.start_main_~k~0#1|) 2147483647)) (not (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-22 00:10:39,323 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:10:39,323 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:10:39,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 48, 48] total 127 [2022-11-22 00:10:39,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064586775] [2022-11-22 00:10:39,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:10:39,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-11-22 00:10:39,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:39,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-11-22 00:10:39,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2983, Invalid=15107, Unknown=0, NotChecked=0, Total=18090 [2022-11-22 00:10:39,331 INFO L87 Difference]: Start difference. First operand 119 states and 126 transitions. Second operand has 128 states, 127 states have (on average 1.8425196850393701) internal successors, (234), 128 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:48,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:48,714 INFO L93 Difference]: Finished difference Result 172 states and 187 transitions. [2022-11-22 00:10:48,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-11-22 00:10:48,714 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 1.8425196850393701) internal successors, (234), 128 states have internal predecessors, (234), 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 79 [2022-11-22 00:10:48,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:48,715 INFO L225 Difference]: With dead ends: 172 [2022-11-22 00:10:48,716 INFO L226 Difference]: Without dead ends: 169 [2022-11-22 00:10:48,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 135 SyntacticMatches, 15 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18306 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=7351, Invalid=30091, Unknown=0, NotChecked=0, Total=37442 [2022-11-22 00:10:48,722 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 713 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 2902 mSolverCounterSat, 710 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 3612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 710 IncrementalHoareTripleChecker+Valid, 2902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:48,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 20 Invalid, 3612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [710 Valid, 2902 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-22 00:10:48,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-22 00:10:48,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 161. [2022-11-22 00:10:48,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 159 states have (on average 1.0628930817610063) internal successors, (169), 160 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:48,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 169 transitions. [2022-11-22 00:10:48,741 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 169 transitions. Word has length 79 [2022-11-22 00:10:48,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:48,741 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 169 transitions. [2022-11-22 00:10:48,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 1.8425196850393701) internal successors, (234), 128 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:48,742 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 169 transitions. [2022-11-22 00:10:48,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-22 00:10:48,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:48,744 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1] [2022-11-22 00:10:48,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-22 00:10:48,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-22 00:10:48,950 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 00:10:48,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:48,950 INFO L85 PathProgramCache]: Analyzing trace with hash -542313379, now seen corresponding path program 4 times [2022-11-22 00:10:48,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:48,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332041833] [2022-11-22 00:10:48,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:48,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:49,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:49,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332041833] [2022-11-22 00:10:49,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332041833] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:10:49,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301457948] [2022-11-22 00:10:49,675 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 00:10:49,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:10:49,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:10:49,679 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:10:49,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-22 00:10:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:49,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-22 00:10:49,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:10:49,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:49,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:10:50,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:50,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301457948] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:10:50,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1048021968] [2022-11-22 00:10:50,868 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 00:10:50,869 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:10:50,869 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:10:50,869 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:10:50,869 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:10:50,999 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:10:52,911 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4786#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (< 2147483645 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:10:52,911 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:10:52,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:10:52,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-11-22 00:10:52,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203358235] [2022-11-22 00:10:52,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:10:52,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-22 00:10:52,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:52,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-22 00:10:52,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1144, Invalid=1718, Unknown=0, NotChecked=0, Total=2862 [2022-11-22 00:10:52,914 INFO L87 Difference]: Start difference. First operand 161 states and 169 transitions. Second operand has 48 states, 47 states have (on average 4.914893617021277) internal successors, (231), 48 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:53,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:53,156 INFO L93 Difference]: Finished difference Result 270 states and 293 transitions. [2022-11-22 00:10:53,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-22 00:10:53,156 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.914893617021277) internal successors, (231), 48 states have internal predecessors, (231), 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 116 [2022-11-22 00:10:53,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:53,158 INFO L225 Difference]: With dead ends: 270 [2022-11-22 00:10:53,158 INFO L226 Difference]: Without dead ends: 269 [2022-11-22 00:10:53,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 295 SyntacticMatches, 23 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1989 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1144, Invalid=1718, Unknown=0, NotChecked=0, Total=2862 [2022-11-22 00:10:53,159 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 100 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:53,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 117 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:10:53,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-11-22 00:10:53,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 239. [2022-11-22 00:10:53,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 237 states have (on average 1.0717299578059072) internal successors, (254), 238 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:53,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 254 transitions. [2022-11-22 00:10:53,179 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 254 transitions. Word has length 116 [2022-11-22 00:10:53,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:53,180 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 254 transitions. [2022-11-22 00:10:53,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.914893617021277) internal successors, (231), 48 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:53,180 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 254 transitions. [2022-11-22 00:10:53,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-22 00:10:53,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:53,183 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1, 1] [2022-11-22 00:10:53,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-22 00:10:53,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-22 00:10:53,388 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 00:10:53,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:53,388 INFO L85 PathProgramCache]: Analyzing trace with hash -291744026, now seen corresponding path program 5 times [2022-11-22 00:10:53,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:53,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357123041] [2022-11-22 00:10:53,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:53,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:57,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:57,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:57,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357123041] [2022-11-22 00:10:57,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357123041] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:10:57,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312734777] [2022-11-22 00:10:57,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 00:10:57,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:10:57,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:10:57,223 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:10:57,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-22 00:10:57,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2022-11-22 00:10:57,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:10:57,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-22 00:10:57,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:11:02,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:11:02,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:11:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:11:12,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312734777] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:11:12,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [661881053] [2022-11-22 00:11:12,252 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 00:11:12,253 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:11:12,253 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:11:12,253 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:11:12,253 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:11:12,434 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:11:25,493 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6599#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |#NULL.offset| 0) (<= 2 |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (not (<= (* 2 |ULTIMATE.start_main_~k~0#1|) 2147483647)) (not (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-22 00:11:25,493 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:11:25,494 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:11:25,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 96, 96] total 255 [2022-11-22 00:11:25,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902146515] [2022-11-22 00:11:25,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:11:25,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 256 states [2022-11-22 00:11:25,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:11:25,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2022-11-22 00:11:25,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11327, Invalid=57579, Unknown=0, NotChecked=0, Total=68906 [2022-11-22 00:11:25,506 INFO L87 Difference]: Start difference. First operand 239 states and 254 transitions. Second operand has 256 states, 255 states have (on average 1.8588235294117648) internal successors, (474), 256 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:12:15,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:12:15,596 INFO L93 Difference]: Finished difference Result 340 states and 371 transitions. [2022-11-22 00:12:15,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2022-11-22 00:12:15,597 INFO L78 Accepts]: Start accepts. Automaton has has 256 states, 255 states have (on average 1.8588235294117648) internal successors, (474), 256 states have internal predecessors, (474), 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 159 [2022-11-22 00:12:15,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:12:15,598 INFO L225 Difference]: With dead ends: 340 [2022-11-22 00:12:15,598 INFO L226 Difference]: Without dead ends: 337 [2022-11-22 00:12:15,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 279 SyntacticMatches, 31 SemanticMatches, 384 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74762 ImplicationChecksByTransitivity, 71.5s TimeCoverageRelationStatistics Valid=29295, Invalid=119315, Unknown=0, NotChecked=0, Total=148610 [2022-11-22 00:12:15,610 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2800 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 10793 mSolverCounterSat, 3014 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2800 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 13807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3014 IncrementalHoareTripleChecker+Valid, 10793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:12:15,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2800 Valid, 35 Invalid, 13807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3014 Valid, 10793 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-22 00:12:15,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-11-22 00:12:15,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 321. [2022-11-22 00:12:15,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 319 states have (on average 1.0564263322884013) internal successors, (337), 320 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:12:15,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 337 transitions. [2022-11-22 00:12:15,649 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 337 transitions. Word has length 159 [2022-11-22 00:12:15,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:12:15,650 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 337 transitions. [2022-11-22 00:12:15,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 256 states, 255 states have (on average 1.8588235294117648) internal successors, (474), 256 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:12:15,651 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 337 transitions. [2022-11-22 00:12:15,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-22 00:12:15,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:12:15,654 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1] [2022-11-22 00:12:15,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-22 00:12:15,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:12:15,858 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 00:12:15,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:12:15,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1549722717, now seen corresponding path program 5 times [2022-11-22 00:12:15,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:12:15,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691510974] [2022-11-22 00:12:15,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:12:15,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:12:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:12:17,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:12:17,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:12:17,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691510974] [2022-11-22 00:12:17,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691510974] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:12:17,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395472406] [2022-11-22 00:12:17,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 00:12:17,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:12:17,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:12:17,863 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:12:17,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-22 00:12:18,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-22 00:12:18,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:12:18,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-22 00:12:18,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:12:18,365 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:12:18,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:12:21,383 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:12:21,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395472406] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:12:21,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [947151751] [2022-11-22 00:12:21,385 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 00:12:21,385 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:12:21,385 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:12:21,386 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:12:21,386 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:12:21,516 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:12:26,767 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9147#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (< 2147483645 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:12:26,767 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:12:26,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:12:26,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2022-11-22 00:12:26,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96563333] [2022-11-22 00:12:26,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:12:26,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-22 00:12:26,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:12:26,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-22 00:12:26,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4576, Invalid=5726, Unknown=0, NotChecked=0, Total=10302 [2022-11-22 00:12:26,771 INFO L87 Difference]: Start difference. First operand 321 states and 337 transitions. Second operand has 96 states, 95 states have (on average 4.957894736842105) internal successors, (471), 96 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:12:27,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:12:27,331 INFO L93 Difference]: Finished difference Result 542 states and 589 transitions. [2022-11-22 00:12:27,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-22 00:12:27,332 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.957894736842105) internal successors, (471), 96 states have internal predecessors, (471), 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 236 [2022-11-22 00:12:27,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:12:27,334 INFO L225 Difference]: With dead ends: 542 [2022-11-22 00:12:27,334 INFO L226 Difference]: Without dead ends: 541 [2022-11-22 00:12:27,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 607 SyntacticMatches, 47 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7461 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=4576, Invalid=5726, Unknown=0, NotChecked=0, Total=10302 [2022-11-22 00:12:27,336 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 319 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:12:27,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 228 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:12:27,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-11-22 00:12:27,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 479. [2022-11-22 00:12:27,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 477 states have (on average 1.069182389937107) internal successors, (510), 478 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:12:27,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 510 transitions. [2022-11-22 00:12:27,375 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 510 transitions. Word has length 236 [2022-11-22 00:12:27,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:12:27,375 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 510 transitions. [2022-11-22 00:12:27,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.957894736842105) internal successors, (471), 96 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:12:27,376 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 510 transitions. [2022-11-22 00:12:27,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-11-22 00:12:27,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:12:27,381 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 63, 63, 1, 1, 1, 1] [2022-11-22 00:12:27,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-22 00:12:27,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:12:27,587 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 00:12:27,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:12:27,587 INFO L85 PathProgramCache]: Analyzing trace with hash 755439334, now seen corresponding path program 6 times [2022-11-22 00:12:27,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:12:27,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993048865] [2022-11-22 00:12:27,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:12:27,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:12:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:12:40,479 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:12:40,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:12:40,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993048865] [2022-11-22 00:12:40,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993048865] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:12:40,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890861769] [2022-11-22 00:12:40,480 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 00:12:40,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:12:40,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:12:40,483 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:12:40,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-22 00:12:40,650 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 00:12:40,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:12:40,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 193 conjunts are in the unsatisfiable core [2022-11-22 00:12:40,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:12:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:12:58,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:13:35,601 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:13:35,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890861769] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:13:35,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1702772997] [2022-11-22 00:13:35,603 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 00:13:35,604 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:13:35,604 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:13:35,604 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:13:35,604 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:13:35,743 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:14:22,631 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12784#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |#NULL.offset| 0) (<= 2 |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (not (<= (* 2 |ULTIMATE.start_main_~k~0#1|) 2147483647)) (not (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-22 00:14:22,631 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:14:22,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:14:22,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 192, 192] total 511 [2022-11-22 00:14:22,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935778436] [2022-11-22 00:14:22,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:14:22,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 512 states [2022-11-22 00:14:22,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:14:22,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 512 interpolants. [2022-11-22 00:14:22,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44143, Invalid=224699, Unknown=0, NotChecked=0, Total=268842 [2022-11-22 00:14:22,647 INFO L87 Difference]: Start difference. First operand 479 states and 510 transitions. Second operand has 512 states, 511 states have (on average 1.8669275929549902) internal successors, (954), 512 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:19:22,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:19:22,534 INFO L93 Difference]: Finished difference Result 676 states and 739 transitions. [2022-11-22 00:19:22,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 383 states. [2022-11-22 00:19:22,535 INFO L78 Accepts]: Start accepts. Automaton has has 512 states, 511 states have (on average 1.8669275929549902) internal successors, (954), 512 states have internal predecessors, (954), 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 319 [2022-11-22 00:19:22,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:19:22,537 INFO L225 Difference]: With dead ends: 676 [2022-11-22 00:19:22,538 INFO L226 Difference]: Without dead ends: 673 [2022-11-22 00:19:22,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1398 GetRequests, 567 SyntacticMatches, 63 SemanticMatches, 768 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302106 ImplicationChecksByTransitivity, 381.1s TimeCoverageRelationStatistics Valid=116959, Invalid=475171, Unknown=0, NotChecked=0, Total=592130 [2022-11-22 00:19:22,568 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 8901 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 37242 mSolverCounterSat, 10997 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8901 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 48239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10997 IncrementalHoareTripleChecker+Valid, 37242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:19:22,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8901 Valid, 67 Invalid, 48239 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10997 Valid, 37242 Invalid, 0 Unknown, 0 Unchecked, 21.1s Time] [2022-11-22 00:19:22,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-11-22 00:19:22,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 641. [2022-11-22 00:19:22,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 639 states have (on average 1.05320813771518) internal successors, (673), 640 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:19:22,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 673 transitions. [2022-11-22 00:19:22,674 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 673 transitions. Word has length 319 [2022-11-22 00:19:22,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:19:22,675 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 673 transitions. [2022-11-22 00:19:22,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 512 states, 511 states have (on average 1.8669275929549902) internal successors, (954), 512 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:19:22,676 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 673 transitions. [2022-11-22 00:19:22,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2022-11-22 00:19:22,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:19:22,686 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 94, 94, 1, 1, 1] [2022-11-22 00:19:22,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-22 00:19:22,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:19:22,893 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 00:19:22,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:19:22,894 INFO L85 PathProgramCache]: Analyzing trace with hash 865256541, now seen corresponding path program 6 times [2022-11-22 00:19:22,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:19:22,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847989778] [2022-11-22 00:19:22,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:19:22,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:19:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:19:30,355 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:19:30,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:19:30,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847989778] [2022-11-22 00:19:30,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847989778] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:19:30,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72678774] [2022-11-22 00:19:30,356 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 00:19:30,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:19:30,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:19:30,357 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:19:30,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-22 00:19:30,554 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 00:19:30,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:19:30,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-22 00:19:30,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:19:31,159 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:19:31,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:19:42,685 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:19:42,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72678774] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:19:42,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [807474059] [2022-11-22 00:19:42,687 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 00:19:42,688 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:19:42,688 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:19:42,688 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:19:42,688 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:19:42,814 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:20:00,930 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17908#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (< 2147483645 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:20:00,930 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:20:00,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:20:00,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2022-11-22 00:20:00,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106017647] [2022-11-22 00:20:00,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:20:00,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-22 00:20:00,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:20:00,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-22 00:20:00,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18352, Invalid=20654, Unknown=0, NotChecked=0, Total=39006 [2022-11-22 00:20:00,938 INFO L87 Difference]: Start difference. First operand 641 states and 673 transitions. Second operand has 192 states, 191 states have (on average 4.979057591623037) internal successors, (951), 192 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:20:03,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:20:03,313 INFO L93 Difference]: Finished difference Result 1086 states and 1181 transitions. [2022-11-22 00:20:03,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-22 00:20:03,316 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.979057591623037) internal successors, (951), 192 states have internal predecessors, (951), 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 476 [2022-11-22 00:20:03,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:20:03,321 INFO L225 Difference]: With dead ends: 1086 [2022-11-22 00:20:03,321 INFO L226 Difference]: Without dead ends: 1085 [2022-11-22 00:20:03,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1522 GetRequests, 1231 SyntacticMatches, 95 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28773 ImplicationChecksByTransitivity, 32.6s TimeCoverageRelationStatistics Valid=18352, Invalid=20654, Unknown=0, NotChecked=0, Total=39006 [2022-11-22 00:20:03,325 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 705 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:20:03,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 451 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 00:20:03,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-11-22 00:20:03,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 959. [2022-11-22 00:20:03,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 957 states have (on average 1.0679205851619644) internal successors, (1022), 958 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:20:03,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1022 transitions. [2022-11-22 00:20:03,435 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1022 transitions. Word has length 476 [2022-11-22 00:20:03,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:20:03,436 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1022 transitions. [2022-11-22 00:20:03,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.979057591623037) internal successors, (951), 192 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:20:03,437 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1022 transitions. [2022-11-22 00:20:03,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2022-11-22 00:20:03,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:20:03,493 INFO L195 NwaCegarLoop]: trace histogram [127, 127, 127, 127, 127, 1, 1, 1, 1] [2022-11-22 00:20:03,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-22 00:20:03,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-22 00:20:03,693 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 00:20:03,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:20:03,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1423742694, now seen corresponding path program 7 times [2022-11-22 00:20:03,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:20:03,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145325951] [2022-11-22 00:20:03,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:20:03,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:20:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:20:59,951 INFO L134 CoverageAnalysis]: Checked inductivity of 40132 backedges. 0 proven. 40132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:20:59,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:20:59,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145325951] [2022-11-22 00:20:59,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145325951] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:20:59,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794491784] [2022-11-22 00:20:59,952 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 00:20:59,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:20:59,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:20:59,953 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:20:59,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbca6af-2fe5-4823-af34-8b0ebfd4b731/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-22 00:21:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:21:00,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 385 conjunts are in the unsatisfiable core [2022-11-22 00:21:00,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:22:08,355 INFO L134 CoverageAnalysis]: Checked inductivity of 40132 backedges. 0 proven. 40132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:22:08,355 INFO L328 TraceCheckSpWp]: Computing backward predicates...