./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/byte_add_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash db53fe9124e215e75c7f288cadf12df33daef67c04c75ea6ca77bc804670a99c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:49:14,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:49:14,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:49:14,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:49:14,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:49:14,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:49:14,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:49:14,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:49:14,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:49:14,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:49:14,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:49:14,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:49:14,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:49:14,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:49:14,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:49:14,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:49:14,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:49:14,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:49:14,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:49:14,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:49:14,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:49:14,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:49:14,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:49:14,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:49:14,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:49:14,079 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:49:14,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:49:14,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:49:14,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:49:14,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:49:14,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:49:14,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:49:14,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:49:14,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:49:14,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:49:14,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:49:14,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:49:14,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:49:14,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:49:14,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:49:14,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:49:14,086 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 14:49:14,100 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:49:14,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:49:14,100 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:49:14,100 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:49:14,101 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:49:14,101 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:49:14,101 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:49:14,101 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:49:14,101 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:49:14,101 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:49:14,101 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:49:14,101 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:49:14,101 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:49:14,101 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:49:14,102 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:49:14,102 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:49:14,102 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:49:14,102 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:49:14,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:49:14,102 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:49:14,103 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:49:14,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:49:14,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:49:14,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:49:14,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:49:14,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:49:14,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:49:14,103 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 14:49:14,103 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:49:14,103 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:49:14,103 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:49:14,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:49:14,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:49:14,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:49:14,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:49:14,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:49:14,104 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:49:14,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:49:14,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:49:14,104 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:49:14,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:49:14,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:49:14,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:49:14,105 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_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db53fe9124e215e75c7f288cadf12df33daef67c04c75ea6ca77bc804670a99c [2022-12-14 14:49:14,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:49:14,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:49:14,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:49:14,304 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:49:14,304 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:49:14,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/bitvector/byte_add_1-2.i [2022-12-14 14:49:16,912 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:49:17,092 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:49:17,093 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/sv-benchmarks/c/bitvector/byte_add_1-2.i [2022-12-14 14:49:17,099 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/data/22e328628/a9b4656be8f94cbba9518c32cbf77b9c/FLAG2d16f072b [2022-12-14 14:49:17,496 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/data/22e328628/a9b4656be8f94cbba9518c32cbf77b9c [2022-12-14 14:49:17,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:49:17,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:49:17,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:49:17,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:49:17,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:49:17,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:49:17" (1/1) ... [2022-12-14 14:49:17,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4441b230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:49:17, skipping insertion in model container [2022-12-14 14:49:17,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:49:17" (1/1) ... [2022-12-14 14:49:17,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:49:17,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:49:17,667 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_44d678da-efb6-4b43-a68e-adfe17e85b13/sv-benchmarks/c/bitvector/byte_add_1-2.i[1168,1181] [2022-12-14 14:49:17,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:49:17,714 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:49:17,725 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_44d678da-efb6-4b43-a68e-adfe17e85b13/sv-benchmarks/c/bitvector/byte_add_1-2.i[1168,1181] [2022-12-14 14:49:17,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:49:17,759 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:49:17,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:49:17 WrapperNode [2022-12-14 14:49:17,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:49:17,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:49:17,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:49:17,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:49:17,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:49:17" (1/1) ... [2022-12-14 14:49:17,774 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:49:17" (1/1) ... [2022-12-14 14:49:17,797 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 182 [2022-12-14 14:49:17,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:49:17,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:49:17,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:49:17,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:49:17,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:49:17" (1/1) ... [2022-12-14 14:49:17,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:49:17" (1/1) ... [2022-12-14 14:49:17,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:49:17" (1/1) ... [2022-12-14 14:49:17,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:49:17" (1/1) ... [2022-12-14 14:49:17,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:49:17" (1/1) ... [2022-12-14 14:49:17,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:49:17" (1/1) ... [2022-12-14 14:49:17,818 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:49:17" (1/1) ... [2022-12-14 14:49:17,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:49:17" (1/1) ... [2022-12-14 14:49:17,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:49:17,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:49:17,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:49:17,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:49:17,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:49:17" (1/1) ... [2022-12-14 14:49:17,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:49:17,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:49:17,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:49:17,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:49:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:49:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:49:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:49:17,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:49:17,942 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:49:17,943 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:49:18,233 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:49:18,407 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:49:18,407 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 14:49:18,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:49:18 BoogieIcfgContainer [2022-12-14 14:49:18,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:49:18,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:49:18,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:49:18,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:49:18,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:49:17" (1/3) ... [2022-12-14 14:49:18,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b1ea7df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:49:18, skipping insertion in model container [2022-12-14 14:49:18,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:49:17" (2/3) ... [2022-12-14 14:49:18,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b1ea7df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:49:18, skipping insertion in model container [2022-12-14 14:49:18,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:49:18" (3/3) ... [2022-12-14 14:49:18,419 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_1-2.i [2022-12-14 14:49:18,439 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:49:18,439 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 41 error locations. [2022-12-14 14:49:18,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:49:18,486 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;@48525118, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:49:18,486 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-12-14 14:49:18,490 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 63 states have (on average 1.9365079365079365) internal successors, (122), 104 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:18,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 14:49:18,494 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:49:18,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 14:49:18,495 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 14:49:18,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:49:18,500 INFO L85 PathProgramCache]: Analyzing trace with hash 320174, now seen corresponding path program 1 times [2022-12-14 14:49:18,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:49:18,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449942616] [2022-12-14 14:49:18,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:18,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:49:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:18,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:49:18,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:49:18,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449942616] [2022-12-14 14:49:18,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449942616] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:49:18,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:49:18,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 14:49:18,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062536122] [2022-12-14 14:49:18,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:49:18,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 14:49:18,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:49:18,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 14:49:18,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 14:49:18,637 INFO L87 Difference]: Start difference. First operand has 105 states, 63 states have (on average 1.9365079365079365) internal successors, (122), 104 states have internal predecessors, (122), 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 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:18,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:49:18,670 INFO L93 Difference]: Finished difference Result 105 states and 122 transitions. [2022-12-14 14:49:18,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 14:49:18,672 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 14:49:18,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:49:18,679 INFO L225 Difference]: With dead ends: 105 [2022-12-14 14:49:18,679 INFO L226 Difference]: Without dead ends: 64 [2022-12-14 14:49:18,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 14:49:18,683 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 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 [2022-12-14 14:49:18,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:49:18,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-12-14 14:49:18,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-12-14 14:49:18,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 63 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:18,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2022-12-14 14:49:18,708 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 3 [2022-12-14 14:49:18,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:49:18,708 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2022-12-14 14:49:18,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:18,708 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2022-12-14 14:49:18,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 14:49:18,709 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:49:18,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:49:18,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:49:18,709 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 14:49:18,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:49:18,710 INFO L85 PathProgramCache]: Analyzing trace with hash -926178572, now seen corresponding path program 1 times [2022-12-14 14:49:18,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:49:18,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608235937] [2022-12-14 14:49:18,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:18,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:49:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:18,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:49:18,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:49:18,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608235937] [2022-12-14 14:49:18,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608235937] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:49:18,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:49:18,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:49:18,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224536707] [2022-12-14 14:49:18,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:49:18,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:49:18,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:49:18,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:49:18,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:49:18,809 INFO L87 Difference]: Start difference. First operand 64 states and 81 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:18,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:49:18,878 INFO L93 Difference]: Finished difference Result 128 states and 168 transitions. [2022-12-14 14:49:18,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:49:18,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-14 14:49:18,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:49:18,880 INFO L225 Difference]: With dead ends: 128 [2022-12-14 14:49:18,880 INFO L226 Difference]: Without dead ends: 85 [2022-12-14 14:49:18,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:49:18,882 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 21 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:49:18,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 113 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:49:18,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-12-14 14:49:18,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 80. [2022-12-14 14:49:18,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.2658227848101267) internal successors, (100), 79 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:18,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2022-12-14 14:49:18,891 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 16 [2022-12-14 14:49:18,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:49:18,891 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2022-12-14 14:49:18,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:18,892 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2022-12-14 14:49:18,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 14:49:18,893 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:49:18,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:49:18,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 14:49:18,893 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 14:49:18,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:49:18,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1477758196, now seen corresponding path program 1 times [2022-12-14 14:49:18,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:49:18,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032965015] [2022-12-14 14:49:18,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:18,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:49:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:19,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:49:19,097 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:49:19,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032965015] [2022-12-14 14:49:19,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032965015] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:49:19,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:49:19,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:49:19,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479041060] [2022-12-14 14:49:19,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:49:19,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:49:19,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:49:19,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:49:19,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:49:19,100 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:19,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:49:19,237 INFO L93 Difference]: Finished difference Result 119 states and 152 transitions. [2022-12-14 14:49:19,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:49:19,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-12-14 14:49:19,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:49:19,238 INFO L225 Difference]: With dead ends: 119 [2022-12-14 14:49:19,238 INFO L226 Difference]: Without dead ends: 103 [2022-12-14 14:49:19,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:49:19,239 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 83 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:49:19,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 189 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:49:19,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-12-14 14:49:19,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 77. [2022-12-14 14:49:19,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.25) internal successors, (95), 76 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:19,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2022-12-14 14:49:19,244 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 19 [2022-12-14 14:49:19,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:49:19,244 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2022-12-14 14:49:19,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:19,245 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2022-12-14 14:49:19,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 14:49:19,245 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:49:19,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:49:19,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 14:49:19,245 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 14:49:19,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:49:19,246 INFO L85 PathProgramCache]: Analyzing trace with hash 749579290, now seen corresponding path program 1 times [2022-12-14 14:49:19,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:49:19,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376785148] [2022-12-14 14:49:19,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:19,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:49:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:19,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:49:19,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:49:19,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376785148] [2022-12-14 14:49:19,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376785148] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:49:19,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:49:19,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 14:49:19,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944243109] [2022-12-14 14:49:19,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:49:19,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:49:19,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:49:19,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:49:19,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:49:19,344 INFO L87 Difference]: Start difference. First operand 77 states and 95 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:19,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:49:19,435 INFO L93 Difference]: Finished difference Result 126 states and 156 transitions. [2022-12-14 14:49:19,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 14:49:19,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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) Word has length 22 [2022-12-14 14:49:19,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:49:19,436 INFO L225 Difference]: With dead ends: 126 [2022-12-14 14:49:19,436 INFO L226 Difference]: Without dead ends: 85 [2022-12-14 14:49:19,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:49:19,437 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 100 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:49:19,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 124 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:49:19,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-12-14 14:49:19,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 78. [2022-12-14 14:49:19,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.2467532467532467) internal successors, (96), 77 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:19,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 96 transitions. [2022-12-14 14:49:19,442 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 96 transitions. Word has length 22 [2022-12-14 14:49:19,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:49:19,442 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 96 transitions. [2022-12-14 14:49:19,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:19,442 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 96 transitions. [2022-12-14 14:49:19,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 14:49:19,443 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:49:19,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:49:19,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 14:49:19,443 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 14:49:19,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:49:19,443 INFO L85 PathProgramCache]: Analyzing trace with hash 428094760, now seen corresponding path program 1 times [2022-12-14 14:49:19,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:49:19,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975078234] [2022-12-14 14:49:19,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:19,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:49:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:19,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:49:19,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:49:19,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975078234] [2022-12-14 14:49:19,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975078234] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:49:19,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:49:19,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:49:19,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325064816] [2022-12-14 14:49:19,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:49:19,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:49:19,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:49:19,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:49:19,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:49:19,540 INFO L87 Difference]: Start difference. First operand 78 states and 96 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:19,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:49:19,654 INFO L93 Difference]: Finished difference Result 164 states and 219 transitions. [2022-12-14 14:49:19,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:49:19,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 28 [2022-12-14 14:49:19,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:49:19,656 INFO L225 Difference]: With dead ends: 164 [2022-12-14 14:49:19,656 INFO L226 Difference]: Without dead ends: 122 [2022-12-14 14:49:19,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:49:19,658 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 60 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:49:19,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 155 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:49:19,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-12-14 14:49:19,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 92. [2022-12-14 14:49:19,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.2747252747252746) internal successors, (116), 91 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:19,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 116 transitions. [2022-12-14 14:49:19,668 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 116 transitions. Word has length 28 [2022-12-14 14:49:19,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:49:19,668 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 116 transitions. [2022-12-14 14:49:19,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:19,669 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 116 transitions. [2022-12-14 14:49:19,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 14:49:19,670 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:49:19,670 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:49:19,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 14:49:19,671 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 14:49:19,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:49:19,671 INFO L85 PathProgramCache]: Analyzing trace with hash 536135502, now seen corresponding path program 1 times [2022-12-14 14:49:19,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:49:19,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700098617] [2022-12-14 14:49:19,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:19,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:49:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:19,791 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 14:49:19,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:49:19,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700098617] [2022-12-14 14:49:19,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700098617] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:49:19,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:49:19,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:49:19,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706025078] [2022-12-14 14:49:19,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:49:19,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:49:19,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:49:19,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:49:19,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:49:19,793 INFO L87 Difference]: Start difference. First operand 92 states and 116 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:19,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:49:19,873 INFO L93 Difference]: Finished difference Result 256 states and 319 transitions. [2022-12-14 14:49:19,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:49:19,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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 34 [2022-12-14 14:49:19,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:49:19,874 INFO L225 Difference]: With dead ends: 256 [2022-12-14 14:49:19,874 INFO L226 Difference]: Without dead ends: 188 [2022-12-14 14:49:19,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:49:19,875 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 101 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:49:19,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 185 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:49:19,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-12-14 14:49:19,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 105. [2022-12-14 14:49:19,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.2692307692307692) internal successors, (132), 104 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:19,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 132 transitions. [2022-12-14 14:49:19,881 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 132 transitions. Word has length 34 [2022-12-14 14:49:19,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:49:19,881 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 132 transitions. [2022-12-14 14:49:19,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:19,881 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 132 transitions. [2022-12-14 14:49:19,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 14:49:19,882 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:49:19,882 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:49:19,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 14:49:19,882 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 14:49:19,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:49:19,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1194481458, now seen corresponding path program 1 times [2022-12-14 14:49:19,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:49:19,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307072987] [2022-12-14 14:49:19,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:19,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:49:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:19,998 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 14:49:19,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:49:19,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307072987] [2022-12-14 14:49:19,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307072987] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:49:19,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:49:19,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:49:19,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335445763] [2022-12-14 14:49:19,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:49:20,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:49:20,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:49:20,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:49:20,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:49:20,000 INFO L87 Difference]: Start difference. First operand 105 states and 132 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:20,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:49:20,085 INFO L93 Difference]: Finished difference Result 262 states and 325 transitions. [2022-12-14 14:49:20,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:49:20,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 34 [2022-12-14 14:49:20,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:49:20,086 INFO L225 Difference]: With dead ends: 262 [2022-12-14 14:49:20,086 INFO L226 Difference]: Without dead ends: 195 [2022-12-14 14:49:20,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:49:20,086 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 83 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:49:20,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 176 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:49:20,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-12-14 14:49:20,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 117. [2022-12-14 14:49:20,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.25) internal successors, (145), 116 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:20,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 145 transitions. [2022-12-14 14:49:20,093 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 145 transitions. Word has length 34 [2022-12-14 14:49:20,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:49:20,093 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 145 transitions. [2022-12-14 14:49:20,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:20,093 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 145 transitions. [2022-12-14 14:49:20,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 14:49:20,094 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:49:20,094 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:49:20,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 14:49:20,094 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 14:49:20,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:49:20,094 INFO L85 PathProgramCache]: Analyzing trace with hash -256847106, now seen corresponding path program 1 times [2022-12-14 14:49:20,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:49:20,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470337572] [2022-12-14 14:49:20,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:20,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:49:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:20,181 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 14:49:20,181 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:49:20,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470337572] [2022-12-14 14:49:20,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470337572] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:49:20,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:49:20,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:49:20,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146040117] [2022-12-14 14:49:20,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:49:20,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:49:20,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:49:20,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:49:20,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:49:20,183 INFO L87 Difference]: Start difference. First operand 117 states and 145 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:20,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:49:20,197 INFO L93 Difference]: Finished difference Result 192 states and 237 transitions. [2022-12-14 14:49:20,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:49:20,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 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 37 [2022-12-14 14:49:20,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:49:20,198 INFO L225 Difference]: With dead ends: 192 [2022-12-14 14:49:20,198 INFO L226 Difference]: Without dead ends: 93 [2022-12-14 14:49:20,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:49:20,199 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 66 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 61 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 [2022-12-14 14:49:20,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 61 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:49:20,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-12-14 14:49:20,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2022-12-14 14:49:20,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 92 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:20,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 113 transitions. [2022-12-14 14:49:20,204 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 113 transitions. Word has length 37 [2022-12-14 14:49:20,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:49:20,204 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 113 transitions. [2022-12-14 14:49:20,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:20,204 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 113 transitions. [2022-12-14 14:49:20,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 14:49:20,204 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:49:20,205 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:49:20,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 14:49:20,205 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 14:49:20,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:49:20,205 INFO L85 PathProgramCache]: Analyzing trace with hash 800850887, now seen corresponding path program 1 times [2022-12-14 14:49:20,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:49:20,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749504173] [2022-12-14 14:49:20,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:20,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:49:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:20,376 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:49:20,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:49:20,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749504173] [2022-12-14 14:49:20,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749504173] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:49:20,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890408702] [2022-12-14 14:49:20,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:20,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:49:20,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:49:20,378 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:49:20,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 14:49:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:20,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 14:49:20,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:49:20,545 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 14:49:20,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:49:20,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890408702] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:49:20,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:49:20,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2022-12-14 14:49:20,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126018853] [2022-12-14 14:49:20,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:49:20,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:49:20,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:49:20,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:49:20,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-14 14:49:20,547 INFO L87 Difference]: Start difference. First operand 93 states and 113 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:20,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:49:20,634 INFO L93 Difference]: Finished difference Result 307 states and 379 transitions. [2022-12-14 14:49:20,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:49:20,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 37 [2022-12-14 14:49:20,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:49:20,635 INFO L225 Difference]: With dead ends: 307 [2022-12-14 14:49:20,635 INFO L226 Difference]: Without dead ends: 240 [2022-12-14 14:49:20,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-14 14:49:20,637 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 120 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:49:20,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 312 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:49:20,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-12-14 14:49:20,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 156. [2022-12-14 14:49:20,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.2516129032258065) internal successors, (194), 155 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:20,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 194 transitions. [2022-12-14 14:49:20,649 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 194 transitions. Word has length 37 [2022-12-14 14:49:20,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:49:20,649 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 194 transitions. [2022-12-14 14:49:20,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:20,649 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 194 transitions. [2022-12-14 14:49:20,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-14 14:49:20,651 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:49:20,651 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:49:20,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 14:49:20,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-14 14:49:20,852 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 14:49:20,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:49:20,853 INFO L85 PathProgramCache]: Analyzing trace with hash 734119589, now seen corresponding path program 1 times [2022-12-14 14:49:20,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:49:20,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604996402] [2022-12-14 14:49:20,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:20,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:49:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:21,071 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:49:21,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:49:21,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604996402] [2022-12-14 14:49:21,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604996402] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:49:21,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792782294] [2022-12-14 14:49:21,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:21,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:49:21,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:49:21,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:49:21,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 14:49:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:21,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 14:49:21,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:49:21,330 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:49:21,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:49:21,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792782294] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:49:21,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:49:21,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-12-14 14:49:21,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654361711] [2022-12-14 14:49:21,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:49:21,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:49:21,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:49:21,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:49:21,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-14 14:49:21,332 INFO L87 Difference]: Start difference. First operand 156 states and 194 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:21,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:49:21,436 INFO L93 Difference]: Finished difference Result 305 states and 391 transitions. [2022-12-14 14:49:21,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:49:21,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 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 40 [2022-12-14 14:49:21,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:49:21,437 INFO L225 Difference]: With dead ends: 305 [2022-12-14 14:49:21,437 INFO L226 Difference]: Without dead ends: 179 [2022-12-14 14:49:21,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-14 14:49:21,439 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 143 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:49:21,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 142 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:49:21,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-12-14 14:49:21,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 163. [2022-12-14 14:49:21,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.1728395061728396) internal successors, (190), 162 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:21,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 190 transitions. [2022-12-14 14:49:21,451 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 190 transitions. Word has length 40 [2022-12-14 14:49:21,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:49:21,451 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 190 transitions. [2022-12-14 14:49:21,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:21,451 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 190 transitions. [2022-12-14 14:49:21,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 14:49:21,454 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:49:21,454 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:49:21,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 14:49:21,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 14:49:21,655 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 14:49:21,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:49:21,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1422675739, now seen corresponding path program 1 times [2022-12-14 14:49:21,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:49:21,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685602307] [2022-12-14 14:49:21,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:21,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:49:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:21,872 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:49:21,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:49:21,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685602307] [2022-12-14 14:49:21,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685602307] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:49:21,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741030045] [2022-12-14 14:49:21,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:21,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:49:21,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:49:21,874 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:49:21,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 14:49:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:21,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 14:49:21,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:49:22,185 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 14:49:22,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:49:22,266 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 14:49:22,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741030045] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:49:22,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2083266543] [2022-12-14 14:49:22,285 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2022-12-14 14:49:22,285 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:49:22,288 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:49:22,292 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:49:22,292 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:49:22,714 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:49:26,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2083266543] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:49:26,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:49:26,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [7, 6, 6] total 23 [2022-12-14 14:49:26,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468170700] [2022-12-14 14:49:26,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:49:26,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 14:49:26,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:49:26,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 14:49:26,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2022-12-14 14:49:26,060 INFO L87 Difference]: Start difference. First operand 163 states and 190 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:27,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:49:27,079 INFO L93 Difference]: Finished difference Result 407 states and 470 transitions. [2022-12-14 14:49:27,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 14:49:27,080 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 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 [2022-12-14 14:49:27,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:49:27,081 INFO L225 Difference]: With dead ends: 407 [2022-12-14 14:49:27,081 INFO L226 Difference]: Without dead ends: 335 [2022-12-14 14:49:27,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 147 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2022-12-14 14:49:27,082 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 346 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:49:27,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 600 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 14:49:27,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-12-14 14:49:27,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 163. [2022-12-14 14:49:27,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.1728395061728396) internal successors, (190), 162 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:27,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 190 transitions. [2022-12-14 14:49:27,098 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 190 transitions. Word has length 56 [2022-12-14 14:49:27,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:49:27,099 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 190 transitions. [2022-12-14 14:49:27,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:27,099 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 190 transitions. [2022-12-14 14:49:27,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 14:49:27,100 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:49:27,100 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:49:27,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 14:49:27,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:49:27,301 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 14:49:27,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:49:27,301 INFO L85 PathProgramCache]: Analyzing trace with hash -354078026, now seen corresponding path program 1 times [2022-12-14 14:49:27,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:49:27,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567150448] [2022-12-14 14:49:27,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:27,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:49:27,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:27,495 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 14:49:27,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:49:27,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567150448] [2022-12-14 14:49:27,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567150448] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:49:27,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300108869] [2022-12-14 14:49:27,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:27,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:49:27,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:49:27,497 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:49:27,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 14:49:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:27,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 14:49:27,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:49:27,663 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 14:49:27,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:49:27,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300108869] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:49:27,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:49:27,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2022-12-14 14:49:27,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496792030] [2022-12-14 14:49:27,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:49:27,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:49:27,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:49:27,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:49:27,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-14 14:49:27,665 INFO L87 Difference]: Start difference. First operand 163 states and 190 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 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) [2022-12-14 14:49:27,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:49:27,751 INFO L93 Difference]: Finished difference Result 327 states and 385 transitions. [2022-12-14 14:49:27,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:49:27,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 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 56 [2022-12-14 14:49:27,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:49:27,752 INFO L225 Difference]: With dead ends: 327 [2022-12-14 14:49:27,752 INFO L226 Difference]: Without dead ends: 255 [2022-12-14 14:49:27,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-14 14:49:27,753 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 113 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:49:27,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 140 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:49:27,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-12-14 14:49:27,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 235. [2022-12-14 14:49:27,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.1752136752136753) internal successors, (275), 234 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:27,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 275 transitions. [2022-12-14 14:49:27,771 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 275 transitions. Word has length 56 [2022-12-14 14:49:27,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:49:27,771 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 275 transitions. [2022-12-14 14:49:27,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 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) [2022-12-14 14:49:27,771 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 275 transitions. [2022-12-14 14:49:27,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 14:49:27,772 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:49:27,772 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:49:27,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 14:49:27,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:49:27,974 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 14:49:27,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:49:27,975 INFO L85 PathProgramCache]: Analyzing trace with hash 2111526295, now seen corresponding path program 1 times [2022-12-14 14:49:27,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:49:27,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749973003] [2022-12-14 14:49:27,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:27,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:49:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:28,215 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:49:28,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:49:28,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749973003] [2022-12-14 14:49:28,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749973003] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:49:28,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496912999] [2022-12-14 14:49:28,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:28,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:49:28,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:49:28,217 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:49:28,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 14:49:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:28,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 14:49:28,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:49:28,434 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 14:49:28,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:49:28,591 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 14:49:28,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496912999] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:49:28,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1394182165] [2022-12-14 14:49:28,594 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2022-12-14 14:49:28,594 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:49:28,594 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:49:28,594 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:49:28,594 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:49:28,960 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:49:31,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1394182165] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:49:31,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:49:31,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [7, 4, 7] total 24 [2022-12-14 14:49:31,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700708087] [2022-12-14 14:49:31,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:49:31,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 14:49:31,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:49:31,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 14:49:31,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2022-12-14 14:49:31,071 INFO L87 Difference]: Start difference. First operand 235 states and 275 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:32,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:49:32,208 INFO L93 Difference]: Finished difference Result 414 states and 477 transitions. [2022-12-14 14:49:32,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 14:49:32,208 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 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 58 [2022-12-14 14:49:32,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:49:32,209 INFO L225 Difference]: With dead ends: 414 [2022-12-14 14:49:32,209 INFO L226 Difference]: Without dead ends: 342 [2022-12-14 14:49:32,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 150 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2022-12-14 14:49:32,210 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 439 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:49:32,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 1020 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 14:49:32,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-12-14 14:49:32,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 231. [2022-12-14 14:49:32,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.1782608695652175) internal successors, (271), 230 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:32,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 271 transitions. [2022-12-14 14:49:32,222 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 271 transitions. Word has length 58 [2022-12-14 14:49:32,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:49:32,222 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 271 transitions. [2022-12-14 14:49:32,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:32,222 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 271 transitions. [2022-12-14 14:49:32,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-14 14:49:32,223 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:49:32,223 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:49:32,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 14:49:32,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 14:49:32,424 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 14:49:32,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:49:32,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1485050251, now seen corresponding path program 1 times [2022-12-14 14:49:32,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:49:32,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934705420] [2022-12-14 14:49:32,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:32,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:49:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:32,558 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 14:49:32,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:49:32,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934705420] [2022-12-14 14:49:32,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934705420] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:49:32,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002727534] [2022-12-14 14:49:32,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:32,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:49:32,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:49:32,560 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:49:32,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 14:49:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:32,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 14:49:32,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:49:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:49:32,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:49:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 14:49:32,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002727534] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:49:32,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1790165232] [2022-12-14 14:49:32,909 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2022-12-14 14:49:32,909 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:49:32,909 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:49:32,909 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:49:32,910 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:49:41,637 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:49:44,736 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6709#(and (<= |ULTIMATE.start_mp_add_~carry~0#1| 1) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_mp_add_~i~0#1| 257) (<= |ULTIMATE.start_mp_add_~a0~0#1| 234770789) (<= |ULTIMATE.start_mp_add_~na~0#1| 4) (<= 234770789 |ULTIMATE.start_mp_add_~a#1|) (= (mod |ULTIMATE.start_mp_add_~carry~0#1| 65536) 0) (<= |ULTIMATE.start_main_~a~0#1| 234770789) (<= |ULTIMATE.start_mp_add_~nb~0#1| 3) (<= 4 |ULTIMATE.start_mp_add_~na~0#1|) (<= 234770789 |ULTIMATE.start_mp_add_~a0~0#1|) (<= 3 |ULTIMATE.start_mp_add_~nb~0#1|) (<= 0 |ULTIMATE.start_mp_add_~i~0#1|) (<= |#NULL.offset| 0) (<= 234770789 |ULTIMATE.start_mp_add_#in~a#1|) (<= |ULTIMATE.start_mp_add_#in~a#1| 234770789) (<= |#NULL.base| 0) (<= 0 |ULTIMATE.start_mp_add_~carry~0#1|) (<= |ULTIMATE.start_mp_add_~a#1| 234770789) (<= 0 |#NULL.offset|) (<= 234770789 |ULTIMATE.start_main_~a~0#1|) (not (<= (* (mod |ULTIMATE.start_mp_add_~r3~0#1| 256) 16777216) 2147483647)) (<= 0 |#StackHeapBarrier|) (not (< (mod |ULTIMATE.start_mp_add_~i~0#1| 256) (mod |ULTIMATE.start_mp_add_~na~0#1| 256))))' at error location [2022-12-14 14:49:44,737 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:49:44,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:49:44,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 7] total 14 [2022-12-14 14:49:44,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884092294] [2022-12-14 14:49:44,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:49:44,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 14:49:44,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:49:44,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 14:49:44,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=966, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 14:49:44,738 INFO L87 Difference]: Start difference. First operand 231 states and 271 transitions. Second operand has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:45,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:49:45,280 INFO L93 Difference]: Finished difference Result 726 states and 921 transitions. [2022-12-14 14:49:45,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 14:49:45,281 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 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 59 [2022-12-14 14:49:45,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:49:45,283 INFO L225 Difference]: With dead ends: 726 [2022-12-14 14:49:45,283 INFO L226 Difference]: Without dead ends: 524 [2022-12-14 14:49:45,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 148 SyntacticMatches, 11 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=427, Invalid=1829, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 14:49:45,284 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 361 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:49:45,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 318 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:49:45,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-12-14 14:49:45,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 272. [2022-12-14 14:49:45,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 1.2472324723247232) internal successors, (338), 271 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:45,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 338 transitions. [2022-12-14 14:49:45,304 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 338 transitions. Word has length 59 [2022-12-14 14:49:45,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:49:45,304 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 338 transitions. [2022-12-14 14:49:45,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:45,305 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 338 transitions. [2022-12-14 14:49:45,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-14 14:49:45,305 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:49:45,305 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:49:45,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-14 14:49:45,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 14:49:45,507 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 14:49:45,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:49:45,508 INFO L85 PathProgramCache]: Analyzing trace with hash -12417497, now seen corresponding path program 1 times [2022-12-14 14:49:45,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:49:45,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563020854] [2022-12-14 14:49:45,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:45,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:49:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:45,662 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 14:49:45,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:49:45,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563020854] [2022-12-14 14:49:45,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563020854] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:49:45,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965258354] [2022-12-14 14:49:45,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:45,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:49:45,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:49:45,663 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:49:45,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 14:49:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:45,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 14:49:45,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:49:45,773 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 14:49:45,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:49:45,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965258354] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:49:45,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:49:45,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-14 14:49:45,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500038892] [2022-12-14 14:49:45,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:49:45,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:49:45,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:49:45,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:49:45,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 14:49:45,774 INFO L87 Difference]: Start difference. First operand 272 states and 338 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:45,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:49:45,870 INFO L93 Difference]: Finished difference Result 567 states and 720 transitions. [2022-12-14 14:49:45,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:49:45,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-12-14 14:49:45,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:49:45,872 INFO L225 Difference]: With dead ends: 567 [2022-12-14 14:49:45,872 INFO L226 Difference]: Without dead ends: 314 [2022-12-14 14:49:45,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 14:49:45,873 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 26 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:49:45,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 139 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:49:45,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-12-14 14:49:45,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 262. [2022-12-14 14:49:45,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 1.1877394636015326) internal successors, (310), 261 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:45,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 310 transitions. [2022-12-14 14:49:45,887 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 310 transitions. Word has length 61 [2022-12-14 14:49:45,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:49:45,888 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 310 transitions. [2022-12-14 14:49:45,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:49:45,888 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 310 transitions. [2022-12-14 14:49:45,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-14 14:49:45,888 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:49:45,888 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:49:45,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 14:49:46,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:49:46,089 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 14:49:46,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:49:46,089 INFO L85 PathProgramCache]: Analyzing trace with hash -485745395, now seen corresponding path program 1 times [2022-12-14 14:49:46,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:49:46,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863464963] [2022-12-14 14:49:46,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:46,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:49:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:46,636 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 14:49:46,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:49:46,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863464963] [2022-12-14 14:49:46,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863464963] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:49:46,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655103036] [2022-12-14 14:49:46,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:46,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:49:46,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:49:46,638 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:49:46,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 14:49:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:46,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-14 14:49:46,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:49:47,285 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:49:47,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:49:48,044 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 14:49:48,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655103036] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:49:48,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [937151349] [2022-12-14 14:49:48,045 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2022-12-14 14:49:48,045 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:49:48,046 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:49:48,046 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:49:48,046 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:49:58,478 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:50:02,309 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9313#(and (<= |ULTIMATE.start_mp_add_~carry~0#1| 1) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_mp_add_~i~0#1| 257) (<= |ULTIMATE.start_mp_add_~a0~0#1| 234770789) (<= |ULTIMATE.start_mp_add_~na~0#1| 4) (<= 234770789 |ULTIMATE.start_mp_add_~a#1|) (= (mod |ULTIMATE.start_mp_add_~carry~0#1| 65536) 0) (<= |ULTIMATE.start_main_~a~0#1| 234770789) (<= |ULTIMATE.start_mp_add_~nb~0#1| 3) (<= 4 |ULTIMATE.start_mp_add_~na~0#1|) (<= 234770789 |ULTIMATE.start_mp_add_~a0~0#1|) (<= 3 |ULTIMATE.start_mp_add_~nb~0#1|) (<= 0 |ULTIMATE.start_mp_add_~i~0#1|) (<= |#NULL.offset| 0) (<= 234770789 |ULTIMATE.start_mp_add_#in~a#1|) (<= |ULTIMATE.start_mp_add_#in~a#1| 234770789) (<= |#NULL.base| 0) (<= 0 |ULTIMATE.start_mp_add_~carry~0#1|) (<= |ULTIMATE.start_mp_add_~a#1| 234770789) (<= 0 |#NULL.offset|) (<= 234770789 |ULTIMATE.start_main_~a~0#1|) (not (<= (* (mod |ULTIMATE.start_mp_add_~r3~0#1| 256) 16777216) 2147483647)) (<= 0 |#StackHeapBarrier|) (not (< (mod |ULTIMATE.start_mp_add_~i~0#1| 256) (mod |ULTIMATE.start_mp_add_~na~0#1| 256))))' at error location [2022-12-14 14:50:02,309 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:50:02,310 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:50:02,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 33 [2022-12-14 14:50:02,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337378283] [2022-12-14 14:50:02,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:50:02,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-14 14:50:02,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:50:02,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-14 14:50:02,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=494, Invalid=2476, Unknown=0, NotChecked=0, Total=2970 [2022-12-14 14:50:02,313 INFO L87 Difference]: Start difference. First operand 262 states and 310 transitions. Second operand has 34 states, 33 states have (on average 4.03030303030303) internal successors, (133), 34 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:50:09,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:50:09,045 INFO L93 Difference]: Finished difference Result 976 states and 1131 transitions. [2022-12-14 14:50:09,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-12-14 14:50:09,045 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 4.03030303030303) internal successors, (133), 34 states have internal predecessors, (133), 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 67 [2022-12-14 14:50:09,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:50:09,047 INFO L225 Difference]: With dead ends: 976 [2022-12-14 14:50:09,047 INFO L226 Difference]: Without dead ends: 714 [2022-12-14 14:50:09,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 175 SyntacticMatches, 11 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8055 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=3028, Invalid=17278, Unknown=0, NotChecked=0, Total=20306 [2022-12-14 14:50:09,050 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 690 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 2240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-14 14:50:09,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 913 Invalid, 2240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2127 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-14 14:50:09,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-12-14 14:50:09,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 316. [2022-12-14 14:50:09,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 1.2) internal successors, (378), 315 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:50:09,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 378 transitions. [2022-12-14 14:50:09,071 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 378 transitions. Word has length 67 [2022-12-14 14:50:09,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:50:09,071 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 378 transitions. [2022-12-14 14:50:09,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 4.03030303030303) internal successors, (133), 34 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:50:09,072 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 378 transitions. [2022-12-14 14:50:09,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 14:50:09,072 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:50:09,072 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:50:09,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-14 14:50:09,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 14:50:09,274 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 14:50:09,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:50:09,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1837288429, now seen corresponding path program 1 times [2022-12-14 14:50:09,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:50:09,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815779259] [2022-12-14 14:50:09,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:50:09,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:50:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:50:09,392 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 14:50:09,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:50:09,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815779259] [2022-12-14 14:50:09,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815779259] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:50:09,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632414306] [2022-12-14 14:50:09,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:50:09,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:50:09,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:50:09,394 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:50:09,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 14:50:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:50:09,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:50:09,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:50:09,510 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 14:50:09,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:50:09,557 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 14:50:09,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632414306] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:50:09,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1326834080] [2022-12-14 14:50:09,559 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2022-12-14 14:50:09,559 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:50:09,559 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:50:09,559 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:50:09,559 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:50:14,857 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:50:17,587 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11337#(and (<= |ULTIMATE.start_mp_add_~carry~0#1| 1) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_mp_add_~i~0#1| 257) (<= |ULTIMATE.start_mp_add_~a0~0#1| 234770789) (<= |ULTIMATE.start_mp_add_~na~0#1| 4) (<= 234770789 |ULTIMATE.start_mp_add_~a#1|) (= (mod |ULTIMATE.start_mp_add_~carry~0#1| 65536) 0) (<= |ULTIMATE.start_main_~a~0#1| 234770789) (<= |ULTIMATE.start_mp_add_~nb~0#1| 3) (<= 4 |ULTIMATE.start_mp_add_~na~0#1|) (<= 234770789 |ULTIMATE.start_mp_add_~a0~0#1|) (<= 3 |ULTIMATE.start_mp_add_~nb~0#1|) (<= 0 |ULTIMATE.start_mp_add_~i~0#1|) (<= |#NULL.offset| 0) (<= 234770789 |ULTIMATE.start_mp_add_#in~a#1|) (<= |ULTIMATE.start_mp_add_#in~a#1| 234770789) (<= |#NULL.base| 0) (<= 0 |ULTIMATE.start_mp_add_~carry~0#1|) (<= |ULTIMATE.start_mp_add_~a#1| 234770789) (<= 0 |#NULL.offset|) (<= 234770789 |ULTIMATE.start_main_~a~0#1|) (not (<= (* (mod |ULTIMATE.start_mp_add_~r3~0#1| 256) 16777216) 2147483647)) (<= 0 |#StackHeapBarrier|) (not (< (mod |ULTIMATE.start_mp_add_~i~0#1| 256) (mod |ULTIMATE.start_mp_add_~na~0#1| 256))))' at error location [2022-12-14 14:50:17,588 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:50:17,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:50:17,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-12-14 14:50:17,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573840378] [2022-12-14 14:50:17,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:50:17,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 14:50:17,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:50:17,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 14:50:17,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=741, Unknown=0, NotChecked=0, Total=930 [2022-12-14 14:50:17,589 INFO L87 Difference]: Start difference. First operand 316 states and 378 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:50:18,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:50:18,007 INFO L93 Difference]: Finished difference Result 1337 states and 1730 transitions. [2022-12-14 14:50:18,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 14:50:18,007 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 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 73 [2022-12-14 14:50:18,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:50:18,009 INFO L225 Difference]: With dead ends: 1337 [2022-12-14 14:50:18,009 INFO L226 Difference]: Without dead ends: 973 [2022-12-14 14:50:18,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 190 SyntacticMatches, 13 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=288, Invalid=1194, Unknown=0, NotChecked=0, Total=1482 [2022-12-14 14:50:18,010 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 271 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:50:18,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 230 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:50:18,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2022-12-14 14:50:18,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 883. [2022-12-14 14:50:18,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.2607709750566893) internal successors, (1112), 882 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:50:18,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1112 transitions. [2022-12-14 14:50:18,067 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1112 transitions. Word has length 73 [2022-12-14 14:50:18,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:50:18,068 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1112 transitions. [2022-12-14 14:50:18,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:50:18,068 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1112 transitions. [2022-12-14 14:50:18,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 14:50:18,069 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:50:18,069 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:50:18,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 14:50:18,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 14:50:18,269 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 14:50:18,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:50:18,270 INFO L85 PathProgramCache]: Analyzing trace with hash 248440199, now seen corresponding path program 1 times [2022-12-14 14:50:18,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:50:18,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331724198] [2022-12-14 14:50:18,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:50:18,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:50:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:50:18,392 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:50:18,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:50:18,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331724198] [2022-12-14 14:50:18,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331724198] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:50:18,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151714841] [2022-12-14 14:50:18,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:50:18,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:50:18,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:50:18,393 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:50:18,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 14:50:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:50:18,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 14:50:18,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:50:18,662 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 39 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 14:50:18,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:50:18,786 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 14:50:18,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151714841] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:50:18,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [152132387] [2022-12-14 14:50:18,787 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2022-12-14 14:50:18,787 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:50:18,788 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:50:18,788 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:50:18,788 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:50:27,467 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:50:30,467 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14205#(and (<= |ULTIMATE.start_mp_add_~carry~0#1| 1) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_mp_add_~i~0#1| 257) (<= |ULTIMATE.start_mp_add_~a0~0#1| 234770789) (<= |ULTIMATE.start_mp_add_~na~0#1| 4) (<= 234770789 |ULTIMATE.start_mp_add_~a#1|) (= (mod |ULTIMATE.start_mp_add_~carry~0#1| 65536) 0) (<= |ULTIMATE.start_main_~a~0#1| 234770789) (<= |ULTIMATE.start_mp_add_~nb~0#1| 3) (<= 4 |ULTIMATE.start_mp_add_~na~0#1|) (<= 234770789 |ULTIMATE.start_mp_add_~a0~0#1|) (<= 3 |ULTIMATE.start_mp_add_~nb~0#1|) (<= 0 |ULTIMATE.start_mp_add_~i~0#1|) (<= |#NULL.offset| 0) (<= 234770789 |ULTIMATE.start_mp_add_#in~a#1|) (<= |ULTIMATE.start_mp_add_#in~a#1| 234770789) (<= |#NULL.base| 0) (<= 0 |ULTIMATE.start_mp_add_~carry~0#1|) (<= |ULTIMATE.start_mp_add_~a#1| 234770789) (<= 0 |#NULL.offset|) (<= 234770789 |ULTIMATE.start_main_~a~0#1|) (not (<= (* (mod |ULTIMATE.start_mp_add_~r3~0#1| 256) 16777216) 2147483647)) (<= 0 |#StackHeapBarrier|) (not (< (mod |ULTIMATE.start_mp_add_~i~0#1| 256) (mod |ULTIMATE.start_mp_add_~na~0#1| 256))))' at error location [2022-12-14 14:50:30,468 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:50:30,468 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:50:30,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 9] total 17 [2022-12-14 14:50:30,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895227797] [2022-12-14 14:50:30,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:50:30,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 14:50:30,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:50:30,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 14:50:30,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=1098, Unknown=0, NotChecked=0, Total=1482 [2022-12-14 14:50:30,469 INFO L87 Difference]: Start difference. First operand 883 states and 1112 transitions. Second operand has 17 states, 17 states have (on average 7.764705882352941) internal successors, (132), 17 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:50:31,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:50:31,639 INFO L93 Difference]: Finished difference Result 2364 states and 2921 transitions. [2022-12-14 14:50:31,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-14 14:50:31,640 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.764705882352941) internal successors, (132), 17 states have internal predecessors, (132), 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 73 [2022-12-14 14:50:31,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:50:31,642 INFO L225 Difference]: With dead ends: 2364 [2022-12-14 14:50:31,642 INFO L226 Difference]: Without dead ends: 1411 [2022-12-14 14:50:31,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 176 SyntacticMatches, 13 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1997 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=982, Invalid=3050, Unknown=0, NotChecked=0, Total=4032 [2022-12-14 14:50:31,644 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 1020 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 14:50:31,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 567 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 14:50:31,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2022-12-14 14:50:31,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 937. [2022-12-14 14:50:31,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 936 states have (on average 1.2104700854700854) internal successors, (1133), 936 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:50:31,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1133 transitions. [2022-12-14 14:50:31,731 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1133 transitions. Word has length 73 [2022-12-14 14:50:31,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:50:31,731 INFO L495 AbstractCegarLoop]: Abstraction has 937 states and 1133 transitions. [2022-12-14 14:50:31,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.764705882352941) internal successors, (132), 17 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:50:31,731 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1133 transitions. [2022-12-14 14:50:31,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 14:50:31,732 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:50:31,732 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:50:31,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 14:50:31,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:50:31,933 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 14:50:31,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:50:31,933 INFO L85 PathProgramCache]: Analyzing trace with hash 562823649, now seen corresponding path program 1 times [2022-12-14 14:50:31,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:50:31,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190333693] [2022-12-14 14:50:31,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:50:31,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:50:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:50:32,463 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 31 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 14:50:32,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:50:32,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190333693] [2022-12-14 14:50:32,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190333693] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:50:32,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769387371] [2022-12-14 14:50:32,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:50:32,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:50:32,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:50:32,465 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:50:32,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 14:50:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:50:32,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-14 14:50:32,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:50:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:50:33,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:50:39,006 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:50:39,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769387371] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:50:39,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [507814791] [2022-12-14 14:50:39,007 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2022-12-14 14:50:39,007 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:50:39,008 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:50:39,008 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:50:39,008 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:50:53,323 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:50:58,453 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18306#(and (<= |ULTIMATE.start_mp_add_~carry~0#1| 1) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_mp_add_~i~0#1| 257) (<= |ULTIMATE.start_mp_add_~a0~0#1| 234770789) (<= |ULTIMATE.start_mp_add_~na~0#1| 4) (<= 234770789 |ULTIMATE.start_mp_add_~a#1|) (= (mod |ULTIMATE.start_mp_add_~carry~0#1| 65536) 0) (<= |ULTIMATE.start_main_~a~0#1| 234770789) (<= 1 |ULTIMATE.start_mp_add_~nb~0#1|) (<= 4 |ULTIMATE.start_mp_add_~na~0#1|) (<= 234770789 |ULTIMATE.start_mp_add_~a0~0#1|) (<= 0 |ULTIMATE.start_mp_add_~i~0#1|) (<= |#NULL.offset| 0) (<= 234770789 |ULTIMATE.start_mp_add_#in~a#1|) (<= |ULTIMATE.start_mp_add_#in~a#1| 234770789) (<= |ULTIMATE.start_mp_add_~nb~0#1| 1) (<= |#NULL.base| 0) (<= 0 |ULTIMATE.start_mp_add_~carry~0#1|) (<= |ULTIMATE.start_mp_add_~a#1| 234770789) (<= 0 |#NULL.offset|) (<= 234770789 |ULTIMATE.start_main_~a~0#1|) (not (<= (* (mod |ULTIMATE.start_mp_add_~r3~0#1| 256) 16777216) 2147483647)) (<= 0 |#StackHeapBarrier|) (not (< (mod |ULTIMATE.start_mp_add_~i~0#1| 256) (mod |ULTIMATE.start_mp_add_~na~0#1| 256))))' at error location [2022-12-14 14:50:58,454 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:50:58,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:50:58,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 14] total 35 [2022-12-14 14:50:58,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338822531] [2022-12-14 14:50:58,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:50:58,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-14 14:50:58,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:50:58,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-14 14:50:58,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=3214, Unknown=0, NotChecked=0, Total=3660 [2022-12-14 14:50:58,456 INFO L87 Difference]: Start difference. First operand 937 states and 1133 transitions. Second operand has 37 states, 36 states have (on average 6.305555555555555) internal successors, (227), 36 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:51:02,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:51:02,800 INFO L93 Difference]: Finished difference Result 2421 states and 2921 transitions. [2022-12-14 14:51:02,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-14 14:51:02,801 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 6.305555555555555) internal successors, (227), 36 states have internal predecessors, (227), 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 78 [2022-12-14 14:51:02,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:51:02,804 INFO L225 Difference]: With dead ends: 2421 [2022-12-14 14:51:02,804 INFO L226 Difference]: Without dead ends: 1600 [2022-12-14 14:51:02,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 168 SyntacticMatches, 13 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3771 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=1467, Invalid=7463, Unknown=0, NotChecked=0, Total=8930 [2022-12-14 14:51:02,806 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 910 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 14:51:02,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 1069 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 14:51:02,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2022-12-14 14:51:02,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 932. [2022-12-14 14:51:02,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 931 states have (on average 1.212674543501611) internal successors, (1129), 931 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:51:02,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1129 transitions. [2022-12-14 14:51:02,881 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1129 transitions. Word has length 78 [2022-12-14 14:51:02,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:51:02,881 INFO L495 AbstractCegarLoop]: Abstraction has 932 states and 1129 transitions. [2022-12-14 14:51:02,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 6.305555555555555) internal successors, (227), 36 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:51:02,881 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1129 transitions. [2022-12-14 14:51:02,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 14:51:02,882 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:51:02,882 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:51:02,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 14:51:03,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:51:03,084 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 14:51:03,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:51:03,085 INFO L85 PathProgramCache]: Analyzing trace with hash 792262115, now seen corresponding path program 1 times [2022-12-14 14:51:03,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:51:03,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263293317] [2022-12-14 14:51:03,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:51:03,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:51:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:51:03,265 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-14 14:51:03,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:51:03,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263293317] [2022-12-14 14:51:03,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263293317] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:51:03,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:51:03,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 14:51:03,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197805888] [2022-12-14 14:51:03,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:51:03,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:51:03,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:51:03,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:51:03,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:51:03,267 INFO L87 Difference]: Start difference. First operand 932 states and 1129 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:51:03,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:51:03,569 INFO L93 Difference]: Finished difference Result 2309 states and 2758 transitions. [2022-12-14 14:51:03,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 14:51:03,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 82 [2022-12-14 14:51:03,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:51:03,573 INFO L225 Difference]: With dead ends: 2309 [2022-12-14 14:51:03,573 INFO L226 Difference]: Without dead ends: 1154 [2022-12-14 14:51:03,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:51:03,574 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 117 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:51:03,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 174 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:51:03,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-12-14 14:51:03,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 841. [2022-12-14 14:51:03,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 840 states have (on average 1.1821428571428572) internal successors, (993), 840 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:51:03,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 993 transitions. [2022-12-14 14:51:03,669 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 993 transitions. Word has length 82 [2022-12-14 14:51:03,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:51:03,669 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 993 transitions. [2022-12-14 14:51:03,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:51:03,669 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 993 transitions. [2022-12-14 14:51:03,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 14:51:03,670 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:51:03,670 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:51:03,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 14:51:03,670 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 14:51:03,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:51:03,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1294449874, now seen corresponding path program 1 times [2022-12-14 14:51:03,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:51:03,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134580863] [2022-12-14 14:51:03,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:51:03,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:51:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:51:03,904 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 13 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:51:03,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:51:03,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134580863] [2022-12-14 14:51:03,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134580863] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:51:03,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511285403] [2022-12-14 14:51:03,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:51:03,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:51:03,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:51:03,906 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:51:03,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d678da-efb6-4b43-a68e-adfe17e85b13/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 14:51:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:51:03,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 14:51:03,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:51:04,124 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-14 14:51:04,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:51:04,250 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-14 14:51:04,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511285403] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:51:04,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [93612363] [2022-12-14 14:51:04,252 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-12-14 14:51:04,252 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:51:04,252 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:51:04,252 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:51:04,252 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs