./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 4e7fbc69 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_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW --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-4e7fbc6 [2022-11-23 15:58:59,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:58:59,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:58:59,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:58:59,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:58:59,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:58:59,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:58:59,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:58:59,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:58:59,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:58:59,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:58:59,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:58:59,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:58:59,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:58:59,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:58:59,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:58:59,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:58:59,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:58:59,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:58:59,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:58:59,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:58:59,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:58:59,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:58:59,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:58:59,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:58:59,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:58:59,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:58:59,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:58:59,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:58:59,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:58:59,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:58:59,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:58:59,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:58:59,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:58:59,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:58:59,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:58:59,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:58:59,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:58:59,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:58:59,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:58:59,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:58:59,135 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-23 15:58:59,179 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:58:59,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:58:59,180 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:58:59,180 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:58:59,181 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:58:59,182 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:58:59,182 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:58:59,182 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:58:59,182 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:58:59,182 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:58:59,183 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:58:59,184 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:58:59,184 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:58:59,184 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:58:59,184 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:58:59,184 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:58:59,185 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:58:59,185 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:58:59,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:58:59,186 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:58:59,186 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:58:59,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:58:59,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:58:59,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:58:59,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:58:59,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:58:59,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:58:59,188 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 15:58:59,188 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:58:59,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:58:59,189 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:58:59,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:58:59,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:58:59,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:58:59,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:58:59,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:58:59,190 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:58:59,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:58:59,191 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:58:59,191 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:58:59,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:58:59,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:58:59,191 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:58:59,192 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_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db53fe9124e215e75c7f288cadf12df33daef67c04c75ea6ca77bc804670a99c [2022-11-23 15:58:59,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:58:59,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:58:59,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:58:59,498 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:58:59,499 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:58:59,500 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/bitvector/byte_add_1-2.i [2022-11-23 15:59:02,495 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:59:02,756 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:59:02,756 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/sv-benchmarks/c/bitvector/byte_add_1-2.i [2022-11-23 15:59:02,763 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/data/20d1ce6b7/988f99d453a34b9b997a3b3c0ba99ab5/FLAG9a3cb3ce1 [2022-11-23 15:59:02,777 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/data/20d1ce6b7/988f99d453a34b9b997a3b3c0ba99ab5 [2022-11-23 15:59:02,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:59:02,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:59:02,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:59:02,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:59:02,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:59:02,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:59:02" (1/1) ... [2022-11-23 15:59:02,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2720913a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:02, skipping insertion in model container [2022-11-23 15:59:02,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:59:02" (1/1) ... [2022-11-23 15:59:02,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:59:02,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:59:02,962 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_11ff3047-3cb1-4b6d-86aa-ac8589751293/sv-benchmarks/c/bitvector/byte_add_1-2.i[1168,1181] [2022-11-23 15:59:03,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:59:03,012 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:59:03,024 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_11ff3047-3cb1-4b6d-86aa-ac8589751293/sv-benchmarks/c/bitvector/byte_add_1-2.i[1168,1181] [2022-11-23 15:59:03,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:59:03,061 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:59:03,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:03 WrapperNode [2022-11-23 15:59:03,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:59:03,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:59:03,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:59:03,063 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:59:03,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:03" (1/1) ... [2022-11-23 15:59:03,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:03" (1/1) ... [2022-11-23 15:59:03,114 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 182 [2022-11-23 15:59:03,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:59:03,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:59:03,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:59:03,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:59:03,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:03" (1/1) ... [2022-11-23 15:59:03,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:03" (1/1) ... [2022-11-23 15:59:03,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:03" (1/1) ... [2022-11-23 15:59:03,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:03" (1/1) ... [2022-11-23 15:59:03,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:03" (1/1) ... [2022-11-23 15:59:03,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:03" (1/1) ... [2022-11-23 15:59:03,165 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:03" (1/1) ... [2022-11-23 15:59:03,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:03" (1/1) ... [2022-11-23 15:59:03,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:59:03,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:59:03,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:59:03,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:59:03,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:03" (1/1) ... [2022-11-23 15:59:03,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:59:03,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:59:03,220 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:59:03,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:59:03,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:59:03,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:59:03,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:59:03,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:59:03,360 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:59:03,363 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:59:03,840 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:59:04,195 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:59:04,195 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 15:59:04,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:59:04 BoogieIcfgContainer [2022-11-23 15:59:04,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:59:04,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:59:04,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:59:04,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:59:04,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:59:02" (1/3) ... [2022-11-23 15:59:04,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f25406a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:59:04, skipping insertion in model container [2022-11-23 15:59:04,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:03" (2/3) ... [2022-11-23 15:59:04,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f25406a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:59:04, skipping insertion in model container [2022-11-23 15:59:04,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:59:04" (3/3) ... [2022-11-23 15:59:04,207 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_1-2.i [2022-11-23 15:59:04,226 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:59:04,227 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 41 error locations. [2022-11-23 15:59:04,278 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:59:04,284 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;@79849261, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:59:04,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-23 15:59:04,288 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) [2022-11-23 15:59:04,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 15:59:04,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:04,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 15:59:04,295 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)] === [2022-11-23 15:59:04,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:04,301 INFO L85 PathProgramCache]: Analyzing trace with hash 319213, now seen corresponding path program 1 times [2022-11-23 15:59:04,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:04,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171146570] [2022-11-23 15:59:04,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:04,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:04,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:59:04,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:04,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171146570] [2022-11-23 15:59:04,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171146570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:04,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:59:04,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:59:04,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628857927] [2022-11-23 15:59:04,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:04,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:59:04,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:59:04,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:59:04,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:59:04,542 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) [2022-11-23 15:59:04,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:04,584 INFO L93 Difference]: Finished difference Result 105 states and 122 transitions. [2022-11-23 15:59:04,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:59:04,587 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 [2022-11-23 15:59:04,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:04,596 INFO L225 Difference]: With dead ends: 105 [2022-11-23 15:59:04,596 INFO L226 Difference]: Without dead ends: 64 [2022-11-23 15:59:04,599 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 [2022-11-23 15:59:04,602 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 [2022-11-23 15:59:04,603 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] [2022-11-23 15:59:04,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-23 15:59:04,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-23 15:59:04,636 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) [2022-11-23 15:59:04,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2022-11-23 15:59:04,639 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 3 [2022-11-23 15:59:04,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:04,639 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2022-11-23 15:59:04,639 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) [2022-11-23 15:59:04,640 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2022-11-23 15:59:04,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 15:59:04,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:04,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:59:04,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:59:04,641 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)] === [2022-11-23 15:59:04,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:04,642 INFO L85 PathProgramCache]: Analyzing trace with hash -415644395, now seen corresponding path program 1 times [2022-11-23 15:59:04,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:04,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537114681] [2022-11-23 15:59:04,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:04,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:04,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:59:04,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:04,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537114681] [2022-11-23 15:59:04,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537114681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:04,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:59:04,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:59:04,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016155559] [2022-11-23 15:59:04,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:04,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:59:04,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:59:04,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:59:04,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:59:04,836 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) [2022-11-23 15:59:04,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:04,978 INFO L93 Difference]: Finished difference Result 128 states and 168 transitions. [2022-11-23 15:59:04,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:59:04,979 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 [2022-11-23 15:59:04,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:04,980 INFO L225 Difference]: With dead ends: 128 [2022-11-23 15:59:04,981 INFO L226 Difference]: Without dead ends: 85 [2022-11-23 15:59:04,981 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 [2022-11-23 15:59:04,983 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 21 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-11-23 15:59:04,983 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] [2022-11-23 15:59:04,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-23 15:59:04,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 80. [2022-11-23 15:59:04,991 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) [2022-11-23 15:59:04,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2022-11-23 15:59:04,993 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 16 [2022-11-23 15:59:04,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:04,993 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2022-11-23 15:59:04,993 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) [2022-11-23 15:59:04,994 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2022-11-23 15:59:04,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-23 15:59:04,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:04,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:59:04,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:59:04,995 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)] === [2022-11-23 15:59:04,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:04,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1972737229, now seen corresponding path program 1 times [2022-11-23 15:59:04,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:04,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334360340] [2022-11-23 15:59:04,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:04,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:05,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:59:05,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:05,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334360340] [2022-11-23 15:59:05,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334360340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:05,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:59:05,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:59:05,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948336732] [2022-11-23 15:59:05,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:05,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:59:05,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:59:05,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:59:05,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:59:05,374 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) [2022-11-23 15:59:05,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:05,636 INFO L93 Difference]: Finished difference Result 119 states and 152 transitions. [2022-11-23 15:59:05,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:59:05,637 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 [2022-11-23 15:59:05,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:05,641 INFO L225 Difference]: With dead ends: 119 [2022-11-23 15:59:05,641 INFO L226 Difference]: Without dead ends: 103 [2022-11-23 15:59:05,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:59:05,643 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 100 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:59:05,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 199 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:59:05,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-23 15:59:05,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 77. [2022-11-23 15:59:05,656 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) [2022-11-23 15:59:05,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2022-11-23 15:59:05,657 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 19 [2022-11-23 15:59:05,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:05,657 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2022-11-23 15:59:05,657 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) [2022-11-23 15:59:05,657 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2022-11-23 15:59:05,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-23 15:59:05,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:05,659 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] [2022-11-23 15:59:05,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:59:05,659 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)] === [2022-11-23 15:59:05,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:05,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1507331717, now seen corresponding path program 1 times [2022-11-23 15:59:05,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:05,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580815380] [2022-11-23 15:59:05,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:05,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:05,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:59:05,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:05,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580815380] [2022-11-23 15:59:05,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580815380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:05,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:59:05,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:59:05,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467322335] [2022-11-23 15:59:05,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:05,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:59:05,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:59:05,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:59:05,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:59:05,856 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) [2022-11-23 15:59:05,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:05,975 INFO L93 Difference]: Finished difference Result 126 states and 156 transitions. [2022-11-23 15:59:05,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:59:05,976 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 [2022-11-23 15:59:05,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:05,977 INFO L225 Difference]: With dead ends: 126 [2022-11-23 15:59:05,977 INFO L226 Difference]: Without dead ends: 85 [2022-11-23 15:59:05,977 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 [2022-11-23 15:59:05,978 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 101 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 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 [2022-11-23 15:59:05,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 124 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:59:05,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-23 15:59:05,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 78. [2022-11-23 15:59:05,985 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) [2022-11-23 15:59:05,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 96 transitions. [2022-11-23 15:59:05,986 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 96 transitions. Word has length 22 [2022-11-23 15:59:05,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:05,987 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 96 transitions. [2022-11-23 15:59:05,987 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) [2022-11-23 15:59:05,987 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 96 transitions. [2022-11-23 15:59:05,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-23 15:59:05,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:05,988 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] [2022-11-23 15:59:05,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:59:05,989 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)] === [2022-11-23 15:59:05,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:05,990 INFO L85 PathProgramCache]: Analyzing trace with hash 682831305, now seen corresponding path program 1 times [2022-11-23 15:59:05,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:05,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270185128] [2022-11-23 15:59:05,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:05,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:06,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:59:06,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:06,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270185128] [2022-11-23 15:59:06,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270185128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:06,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:59:06,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:59:06,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532776743] [2022-11-23 15:59:06,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:06,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:59:06,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:59:06,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:59:06,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:59:06,133 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) [2022-11-23 15:59:06,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:06,281 INFO L93 Difference]: Finished difference Result 164 states and 219 transitions. [2022-11-23 15:59:06,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:59:06,281 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 [2022-11-23 15:59:06,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:06,282 INFO L225 Difference]: With dead ends: 164 [2022-11-23 15:59:06,283 INFO L226 Difference]: Without dead ends: 122 [2022-11-23 15:59:06,283 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 [2022-11-23 15:59:06,284 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 [2022-11-23 15:59:06,285 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] [2022-11-23 15:59:06,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-23 15:59:06,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 92. [2022-11-23 15:59:06,291 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) [2022-11-23 15:59:06,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 116 transitions. [2022-11-23 15:59:06,292 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 116 transitions. Word has length 28 [2022-11-23 15:59:06,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:06,293 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 116 transitions. [2022-11-23 15:59:06,293 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) [2022-11-23 15:59:06,293 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 116 transitions. [2022-11-23 15:59:06,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-23 15:59:06,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:06,294 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] [2022-11-23 15:59:06,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:59:06,295 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)] === [2022-11-23 15:59:06,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:06,295 INFO L85 PathProgramCache]: Analyzing trace with hash -489356497, now seen corresponding path program 1 times [2022-11-23 15:59:06,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:06,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578519524] [2022-11-23 15:59:06,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:06,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:06,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 15:59:06,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:06,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578519524] [2022-11-23 15:59:06,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578519524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:06,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:59:06,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:59:06,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453202238] [2022-11-23 15:59:06,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:06,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:59:06,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:59:06,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:59:06,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:59:06,530 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) [2022-11-23 15:59:06,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:06,650 INFO L93 Difference]: Finished difference Result 256 states and 319 transitions. [2022-11-23 15:59:06,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:59:06,651 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 [2022-11-23 15:59:06,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:06,652 INFO L225 Difference]: With dead ends: 256 [2022-11-23 15:59:06,652 INFO L226 Difference]: Without dead ends: 188 [2022-11-23 15:59:06,653 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 [2022-11-23 15:59:06,654 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 [2022-11-23 15:59:06,654 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] [2022-11-23 15:59:06,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-23 15:59:06,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 105. [2022-11-23 15:59:06,662 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) [2022-11-23 15:59:06,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 132 transitions. [2022-11-23 15:59:06,663 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 132 transitions. Word has length 34 [2022-11-23 15:59:06,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:06,664 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 132 transitions. [2022-11-23 15:59:06,664 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) [2022-11-23 15:59:06,664 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 132 transitions. [2022-11-23 15:59:06,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-23 15:59:06,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:06,666 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] [2022-11-23 15:59:06,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:59:06,666 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)] === [2022-11-23 15:59:06,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:06,667 INFO L85 PathProgramCache]: Analyzing trace with hash 168989459, now seen corresponding path program 1 times [2022-11-23 15:59:06,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:06,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300272519] [2022-11-23 15:59:06,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:06,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 15:59:06,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:06,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300272519] [2022-11-23 15:59:06,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300272519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:06,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:59:06,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:59:06,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932231769] [2022-11-23 15:59:06,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:06,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:59:06,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:59:06,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:59:06,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:59:06,848 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) [2022-11-23 15:59:06,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:06,961 INFO L93 Difference]: Finished difference Result 262 states and 325 transitions. [2022-11-23 15:59:06,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:59:06,961 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 [2022-11-23 15:59:06,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:06,963 INFO L225 Difference]: With dead ends: 262 [2022-11-23 15:59:06,963 INFO L226 Difference]: Without dead ends: 195 [2022-11-23 15:59:06,963 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 [2022-11-23 15:59:06,964 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 [2022-11-23 15:59:06,965 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] [2022-11-23 15:59:06,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-23 15:59:06,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 117. [2022-11-23 15:59:06,973 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) [2022-11-23 15:59:06,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 145 transitions. [2022-11-23 15:59:06,974 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 145 transitions. Word has length 34 [2022-11-23 15:59:06,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:06,974 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 145 transitions. [2022-11-23 15:59:06,975 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) [2022-11-23 15:59:06,975 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 145 transitions. [2022-11-23 15:59:06,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-23 15:59:06,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:06,976 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] [2022-11-23 15:59:06,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:59:06,977 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)] === [2022-11-23 15:59:06,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:06,978 INFO L85 PathProgramCache]: Analyzing trace with hash -586612867, now seen corresponding path program 1 times [2022-11-23 15:59:06,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:06,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128847552] [2022-11-23 15:59:06,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:06,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:07,133 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 15:59:07,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:07,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128847552] [2022-11-23 15:59:07,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128847552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:07,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:59:07,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:59:07,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410660636] [2022-11-23 15:59:07,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:07,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:59:07,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:59:07,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:59:07,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:59:07,136 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) [2022-11-23 15:59:07,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:07,153 INFO L93 Difference]: Finished difference Result 192 states and 237 transitions. [2022-11-23 15:59:07,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:59:07,155 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 [2022-11-23 15:59:07,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:07,156 INFO L225 Difference]: With dead ends: 192 [2022-11-23 15:59:07,156 INFO L226 Difference]: Without dead ends: 93 [2022-11-23 15:59:07,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:59:07,157 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 [2022-11-23 15:59:07,157 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] [2022-11-23 15:59:07,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-23 15:59:07,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2022-11-23 15:59:07,162 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) [2022-11-23 15:59:07,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 113 transitions. [2022-11-23 15:59:07,163 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 113 transitions. Word has length 37 [2022-11-23 15:59:07,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:07,163 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 113 transitions. [2022-11-23 15:59:07,164 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) [2022-11-23 15:59:07,164 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 113 transitions. [2022-11-23 15:59:07,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-23 15:59:07,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:07,165 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] [2022-11-23 15:59:07,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:59:07,165 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)] === [2022-11-23 15:59:07,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:07,166 INFO L85 PathProgramCache]: Analyzing trace with hash 471085126, now seen corresponding path program 1 times [2022-11-23 15:59:07,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:07,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101835338] [2022-11-23 15:59:07,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:07,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:07,497 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:59:07,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:07,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101835338] [2022-11-23 15:59:07,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101835338] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:59:07,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875039747] [2022-11-23 15:59:07,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:07,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:59:07,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:59:07,505 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:59:07,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:59:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:07,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 15:59:07,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:59:07,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 15:59:07,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:59:07,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875039747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:07,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:59:07,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-23 15:59:07,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519186349] [2022-11-23 15:59:07,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:07,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:59:07,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:59:07,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:59:07,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-23 15:59:07,807 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) [2022-11-23 15:59:07,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:07,905 INFO L93 Difference]: Finished difference Result 307 states and 379 transitions. [2022-11-23 15:59:07,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:59:07,906 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 [2022-11-23 15:59:07,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:07,907 INFO L225 Difference]: With dead ends: 307 [2022-11-23 15:59:07,907 INFO L226 Difference]: Without dead ends: 240 [2022-11-23 15:59:07,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-23 15:59:07,911 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 127 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 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 [2022-11-23 15:59:07,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 312 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:59:07,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-23 15:59:07,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 156. [2022-11-23 15:59:07,935 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) [2022-11-23 15:59:07,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 194 transitions. [2022-11-23 15:59:07,936 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 194 transitions. Word has length 37 [2022-11-23 15:59:07,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:07,937 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 194 transitions. [2022-11-23 15:59:07,937 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) [2022-11-23 15:59:07,937 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 194 transitions. [2022-11-23 15:59:07,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-23 15:59:07,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:07,944 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] [2022-11-23 15:59:07,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:59:08,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:59:08,160 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)] === [2022-11-23 15:59:08,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:08,160 INFO L85 PathProgramCache]: Analyzing trace with hash -727460410, now seen corresponding path program 1 times [2022-11-23 15:59:08,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:08,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369164895] [2022-11-23 15:59:08,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:08,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:08,481 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:59:08,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:08,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369164895] [2022-11-23 15:59:08,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369164895] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:59:08,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184875382] [2022-11-23 15:59:08,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:08,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:59:08,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:59:08,487 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:59:08,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:59:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:08,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 15:59:08,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:59:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:59:08,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:59:08,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184875382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:08,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:59:08,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2022-11-23 15:59:08,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702450714] [2022-11-23 15:59:08,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:08,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:59:08,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:59:08,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:59:08,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-23 15:59:08,810 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) [2022-11-23 15:59:08,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:08,948 INFO L93 Difference]: Finished difference Result 305 states and 391 transitions. [2022-11-23 15:59:08,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:59:08,949 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 [2022-11-23 15:59:08,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:08,950 INFO L225 Difference]: With dead ends: 305 [2022-11-23 15:59:08,950 INFO L226 Difference]: Without dead ends: 179 [2022-11-23 15:59:08,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-23 15:59:08,952 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 124 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:59:08,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 96 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:59:08,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-23 15:59:08,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 163. [2022-11-23 15:59:08,964 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) [2022-11-23 15:59:08,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 190 transitions. [2022-11-23 15:59:08,965 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 190 transitions. Word has length 40 [2022-11-23 15:59:08,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:08,966 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 190 transitions. [2022-11-23 15:59:08,967 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) [2022-11-23 15:59:08,967 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 190 transitions. [2022-11-23 15:59:08,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-23 15:59:08,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:08,970 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] [2022-11-23 15:59:08,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:59:09,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 15:59:09,183 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)] === [2022-11-23 15:59:09,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:09,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1402338364, now seen corresponding path program 1 times [2022-11-23 15:59:09,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:09,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310939854] [2022-11-23 15:59:09,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:09,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:09,457 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:59:09,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:09,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310939854] [2022-11-23 15:59:09,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310939854] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:59:09,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819332954] [2022-11-23 15:59:09,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:09,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:59:09,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:59:09,460 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:59:09,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:59:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:09,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 15:59:09,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:59:09,990 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:59:09,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:59:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:59:10,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819332954] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:59:10,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [803687876] [2022-11-23 15:59:10,143 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2022-11-23 15:59:10,143 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:59:10,147 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:59:10,152 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:59:10,152 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:59:10,854 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:59:14,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [803687876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:14,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:59:14,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [7, 6, 6] total 23 [2022-11-23 15:59:14,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999760971] [2022-11-23 15:59:14,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:14,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 15:59:14,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:59:14,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 15:59:14,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2022-11-23 15:59:14,942 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) [2022-11-23 15:59:16,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:16,240 INFO L93 Difference]: Finished difference Result 407 states and 470 transitions. [2022-11-23 15:59:16,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 15:59:16,241 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 [2022-11-23 15:59:16,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:16,243 INFO L225 Difference]: With dead ends: 407 [2022-11-23 15:59:16,243 INFO L226 Difference]: Without dead ends: 335 [2022-11-23 15:59:16,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 147 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2022-11-23 15:59:16,244 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 324 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:59:16,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 669 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 15:59:16,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-11-23 15:59:16,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 163. [2022-11-23 15:59:16,264 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) [2022-11-23 15:59:16,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 190 transitions. [2022-11-23 15:59:16,265 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 190 transitions. Word has length 56 [2022-11-23 15:59:16,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:16,266 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 190 transitions. [2022-11-23 15:59:16,266 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) [2022-11-23 15:59:16,266 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 190 transitions. [2022-11-23 15:59:16,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-23 15:59:16,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:16,267 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] [2022-11-23 15:59:16,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:59:16,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:59:16,473 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)] === [2022-11-23 15:59:16,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:16,474 INFO L85 PathProgramCache]: Analyzing trace with hash -374415401, now seen corresponding path program 1 times [2022-11-23 15:59:16,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:16,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135537514] [2022-11-23 15:59:16,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:16,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 15:59:16,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:16,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135537514] [2022-11-23 15:59:16,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135537514] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:59:16,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494809476] [2022-11-23 15:59:16,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:16,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:59:16,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:59:16,750 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:59:16,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:59:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:16,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 15:59:16,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:59:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 15:59:17,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:59:17,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494809476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:17,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:59:17,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2022-11-23 15:59:17,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334610307] [2022-11-23 15:59:17,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:17,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:59:17,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:59:17,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:59:17,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:59:17,021 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) [2022-11-23 15:59:17,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:17,157 INFO L93 Difference]: Finished difference Result 327 states and 385 transitions. [2022-11-23 15:59:17,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:59:17,158 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 [2022-11-23 15:59:17,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:17,162 INFO L225 Difference]: With dead ends: 327 [2022-11-23 15:59:17,162 INFO L226 Difference]: Without dead ends: 255 [2022-11-23 15:59:17,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:59:17,163 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 117 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:59:17,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 173 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:59:17,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-11-23 15:59:17,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 235. [2022-11-23 15:59:17,185 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) [2022-11-23 15:59:17,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 275 transitions. [2022-11-23 15:59:17,185 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 275 transitions. Word has length 56 [2022-11-23 15:59:17,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:17,186 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 275 transitions. [2022-11-23 15:59:17,186 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) [2022-11-23 15:59:17,186 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 275 transitions. [2022-11-23 15:59:17,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-23 15:59:17,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:17,187 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] [2022-11-23 15:59:17,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:59:17,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:59:17,393 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)] === [2022-11-23 15:59:17,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:17,394 INFO L85 PathProgramCache]: Analyzing trace with hash -252821896, now seen corresponding path program 1 times [2022-11-23 15:59:17,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:17,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595919597] [2022-11-23 15:59:17,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:17,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:17,677 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:59:17,678 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:17,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595919597] [2022-11-23 15:59:17,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595919597] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:59:17,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303717496] [2022-11-23 15:59:17,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:17,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:59:17,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:59:17,680 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:59:17,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 15:59:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:17,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 15:59:17,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:59:17,989 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 15:59:17,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:59:18,205 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 15:59:18,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303717496] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:59:18,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [782495518] [2022-11-23 15:59:18,210 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2022-11-23 15:59:18,211 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:59:18,211 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:59:18,211 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:59:18,211 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:59:18,738 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:59:21,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [782495518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:21,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:59:21,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [7, 4, 7] total 24 [2022-11-23 15:59:21,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169825301] [2022-11-23 15:59:21,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:21,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 15:59:21,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:59:21,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 15:59:21,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2022-11-23 15:59:21,751 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) [2022-11-23 15:59:23,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:23,124 INFO L93 Difference]: Finished difference Result 414 states and 477 transitions. [2022-11-23 15:59:23,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 15:59:23,125 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 [2022-11-23 15:59:23,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:23,126 INFO L225 Difference]: With dead ends: 414 [2022-11-23 15:59:23,127 INFO L226 Difference]: Without dead ends: 342 [2022-11-23 15:59:23,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 150 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2022-11-23 15:59:23,128 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 377 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:59:23,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 963 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-23 15:59:23,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-11-23 15:59:23,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 231. [2022-11-23 15:59:23,155 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) [2022-11-23 15:59:23,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 271 transitions. [2022-11-23 15:59:23,157 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 271 transitions. Word has length 58 [2022-11-23 15:59:23,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:23,157 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 271 transitions. [2022-11-23 15:59:23,157 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) [2022-11-23 15:59:23,158 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 271 transitions. [2022-11-23 15:59:23,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-23 15:59:23,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:23,159 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] [2022-11-23 15:59:23,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 15:59:23,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-23 15:59:23,365 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)] === [2022-11-23 15:59:23,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:23,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1204700362, now seen corresponding path program 1 times [2022-11-23 15:59:23,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:23,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583207791] [2022-11-23 15:59:23,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:23,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:23,615 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 15:59:23,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:23,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583207791] [2022-11-23 15:59:23,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583207791] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:59:23,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826636022] [2022-11-23 15:59:23,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:23,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:59:23,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:59:23,617 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:59:23,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 15:59:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:23,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 15:59:23,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:59:23,894 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:59:23,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:59:24,129 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 15:59:24,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826636022] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:59:24,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [904812347] [2022-11-23 15:59:24,133 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2022-11-23 15:59:24,133 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:59:24,134 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:59:24,134 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:59:24,134 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:59:36,178 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:59:40,312 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6714#(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 [2022-11-23 15:59:40,312 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:59:40,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:59:40,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 7] total 14 [2022-11-23 15:59:40,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097812073] [2022-11-23 15:59:40,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:59:40,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 15:59:40,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:59:40,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 15:59:40,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=966, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 15:59:40,315 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) [2022-11-23 15:59:41,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:41,109 INFO L93 Difference]: Finished difference Result 726 states and 921 transitions. [2022-11-23 15:59:41,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-23 15:59:41,109 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 [2022-11-23 15:59:41,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:41,111 INFO L225 Difference]: With dead ends: 726 [2022-11-23 15:59:41,111 INFO L226 Difference]: Without dead ends: 524 [2022-11-23 15:59:41,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 148 SyntacticMatches, 11 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=427, Invalid=1829, Unknown=0, NotChecked=0, Total=2256 [2022-11-23 15:59:41,113 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 486 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:59:41,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 289 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:59:41,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-11-23 15:59:41,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 272. [2022-11-23 15:59:41,139 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) [2022-11-23 15:59:41,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 338 transitions. [2022-11-23 15:59:41,140 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 338 transitions. Word has length 59 [2022-11-23 15:59:41,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:41,140 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 338 transitions. [2022-11-23 15:59:41,141 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) [2022-11-23 15:59:41,141 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 338 transitions. [2022-11-23 15:59:41,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-23 15:59:41,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:41,142 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] [2022-11-23 15:59:41,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 15:59:41,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 15:59:41,348 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)] === [2022-11-23 15:59:41,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:41,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1154278822, now seen corresponding path program 1 times [2022-11-23 15:59:41,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:41,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003373536] [2022-11-23 15:59:41,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:41,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:41,550 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 15:59:41,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:41,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003373536] [2022-11-23 15:59:41,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003373536] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:59:41,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699370843] [2022-11-23 15:59:41,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:41,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:59:41,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:59:41,555 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:59:41,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 15:59:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:41,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 15:59:41,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:59:41,765 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 15:59:41,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:59:41,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699370843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:41,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:59:41,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-23 15:59:41,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292872435] [2022-11-23 15:59:41,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:41,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:59:41,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:59:41,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:59:41,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:59:41,766 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) [2022-11-23 15:59:41,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:41,886 INFO L93 Difference]: Finished difference Result 567 states and 720 transitions. [2022-11-23 15:59:41,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:59:41,887 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 [2022-11-23 15:59:41,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:41,889 INFO L225 Difference]: With dead ends: 567 [2022-11-23 15:59:41,889 INFO L226 Difference]: Without dead ends: 314 [2022-11-23 15:59:41,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:59:41,892 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 [2022-11-23 15:59:41,892 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] [2022-11-23 15:59:41,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-11-23 15:59:41,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 262. [2022-11-23 15:59:41,916 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) [2022-11-23 15:59:41,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 310 transitions. [2022-11-23 15:59:41,917 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 310 transitions. Word has length 61 [2022-11-23 15:59:41,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:41,918 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 310 transitions. [2022-11-23 15:59:41,919 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) [2022-11-23 15:59:41,919 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 310 transitions. [2022-11-23 15:59:41,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-23 15:59:41,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:41,920 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] [2022-11-23 15:59:41,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 15:59:42,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:59:42,126 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)] === [2022-11-23 15:59:42,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:42,127 INFO L85 PathProgramCache]: Analyzing trace with hash 122331468, now seen corresponding path program 1 times [2022-11-23 15:59:42,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:42,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859998269] [2022-11-23 15:59:42,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:42,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:43,122 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 15:59:43,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:43,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859998269] [2022-11-23 15:59:43,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859998269] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:59:43,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353928844] [2022-11-23 15:59:43,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:43,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:59:43,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:59:43,124 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:59:43,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 15:59:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:43,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-23 15:59:43,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:59:44,028 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:59:44,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:59:45,048 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 15:59:45,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353928844] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:59:45,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [755380731] [2022-11-23 15:59:45,055 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2022-11-23 15:59:45,055 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:59:45,055 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:59:45,055 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:59:45,056 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:59:58,233 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:00:03,397 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9318#(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 [2022-11-23 16:00:03,397 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:00:03,398 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:00:03,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 33 [2022-11-23 16:00:03,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11034907] [2022-11-23 16:00:03,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:00:03,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-23 16:00:03,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:03,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-23 16:00:03,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=492, Invalid=2478, Unknown=0, NotChecked=0, Total=2970 [2022-11-23 16:00:03,401 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) [2022-11-23 16:00:12,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:12,431 INFO L93 Difference]: Finished difference Result 976 states and 1131 transitions. [2022-11-23 16:00:12,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-11-23 16:00:12,431 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 [2022-11-23 16:00:12,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:12,434 INFO L225 Difference]: With dead ends: 976 [2022-11-23 16:00:12,434 INFO L226 Difference]: Without dead ends: 714 [2022-11-23 16:00:12,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 175 SyntacticMatches, 11 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8057 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=3023, Invalid=17283, Unknown=0, NotChecked=0, Total=20306 [2022-11-23 16:00:12,439 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 954 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 1766 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 1913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:12,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 787 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1766 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-23 16:00:12,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-11-23 16:00:12,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 316. [2022-11-23 16:00:12,476 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) [2022-11-23 16:00:12,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 378 transitions. [2022-11-23 16:00:12,477 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 378 transitions. Word has length 67 [2022-11-23 16:00:12,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:12,478 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 378 transitions. [2022-11-23 16:00:12,478 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) [2022-11-23 16:00:12,478 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 378 transitions. [2022-11-23 16:00:12,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 16:00:12,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:12,484 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] [2022-11-23 16:00:12,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 16:00:12,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 16:00:12,690 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)] === [2022-11-23 16:00:12,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:12,691 INFO L85 PathProgramCache]: Analyzing trace with hash -881767150, now seen corresponding path program 1 times [2022-11-23 16:00:12,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:12,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638437791] [2022-11-23 16:00:12,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:12,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:12,845 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-23 16:00:12,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:12,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638437791] [2022-11-23 16:00:12,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638437791] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:12,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369877907] [2022-11-23 16:00:12,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:12,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:12,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:12,861 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:12,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 16:00:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:12,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 16:00:12,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:13,033 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 16:00:13,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:00:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 16:00:13,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369877907] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:00:13,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1886978463] [2022-11-23 16:00:13,124 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2022-11-23 16:00:13,124 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:00:13,124 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:00:13,125 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:00:13,125 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:00:19,915 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:00:23,809 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11342#(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 [2022-11-23 16:00:23,809 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:00:23,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:00:23,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-11-23 16:00:23,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885725065] [2022-11-23 16:00:23,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:00:23,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 16:00:23,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:23,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 16:00:23,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=741, Unknown=0, NotChecked=0, Total=930 [2022-11-23 16:00:23,811 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) [2022-11-23 16:00:24,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:24,376 INFO L93 Difference]: Finished difference Result 1337 states and 1730 transitions. [2022-11-23 16:00:24,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 16:00:24,377 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 [2022-11-23 16:00:24,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:24,380 INFO L225 Difference]: With dead ends: 1337 [2022-11-23 16:00:24,380 INFO L226 Difference]: Without dead ends: 973 [2022-11-23 16:00:24,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 190 SyntacticMatches, 13 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=288, Invalid=1194, Unknown=0, NotChecked=0, Total=1482 [2022-11-23 16:00:24,383 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 354 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:24,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 187 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 16:00:24,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2022-11-23 16:00:24,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 883. [2022-11-23 16:00:24,512 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) [2022-11-23 16:00:24,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1112 transitions. [2022-11-23 16:00:24,514 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1112 transitions. Word has length 73 [2022-11-23 16:00:24,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:24,514 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1112 transitions. [2022-11-23 16:00:24,515 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) [2022-11-23 16:00:24,515 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1112 transitions. [2022-11-23 16:00:24,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 16:00:24,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:24,516 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] [2022-11-23 16:00:24,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 16:00:24,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 16:00:24,722 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)] === [2022-11-23 16:00:24,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:24,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1203961478, now seen corresponding path program 1 times [2022-11-23 16:00:24,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:24,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998583491] [2022-11-23 16:00:24,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:24,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 16:00:24,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:24,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998583491] [2022-11-23 16:00:24,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998583491] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:24,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155475136] [2022-11-23 16:00:24,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:24,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:24,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:24,943 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:24,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 16:00:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:25,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 16:00:25,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:25,367 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 39 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 16:00:25,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:00:25,563 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 16:00:25,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155475136] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:00:25,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1504042560] [2022-11-23 16:00:25,566 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2022-11-23 16:00:25,566 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:00:25,566 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:00:25,566 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:00:25,567 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:00:35,652 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:00:39,872 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14210#(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 [2022-11-23 16:00:39,872 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:00:39,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:00:39,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 9] total 17 [2022-11-23 16:00:39,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003097295] [2022-11-23 16:00:39,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:00:39,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 16:00:39,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:39,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 16:00:39,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=1098, Unknown=0, NotChecked=0, Total=1482 [2022-11-23 16:00:39,874 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) [2022-11-23 16:00:41,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:41,517 INFO L93 Difference]: Finished difference Result 2364 states and 2921 transitions. [2022-11-23 16:00:41,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-23 16:00:41,517 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 [2022-11-23 16:00:41,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:41,521 INFO L225 Difference]: With dead ends: 2364 [2022-11-23 16:00:41,521 INFO L226 Difference]: Without dead ends: 1411 [2022-11-23 16:00:41,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 176 SyntacticMatches, 13 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1997 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=982, Invalid=3050, Unknown=0, NotChecked=0, Total=4032 [2022-11-23 16:00:41,524 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 1242 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:41,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 583 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 16:00:41,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2022-11-23 16:00:41,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 937. [2022-11-23 16:00:41,635 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) [2022-11-23 16:00:41,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1133 transitions. [2022-11-23 16:00:41,638 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1133 transitions. Word has length 73 [2022-11-23 16:00:41,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:41,638 INFO L495 AbstractCegarLoop]: Abstraction has 937 states and 1133 transitions. [2022-11-23 16:00:41,638 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) [2022-11-23 16:00:41,639 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1133 transitions. [2022-11-23 16:00:41,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-23 16:00:41,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:41,640 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] [2022-11-23 16:00:41,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 16:00:41,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 16:00:41,846 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)] === [2022-11-23 16:00:41,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:41,847 INFO L85 PathProgramCache]: Analyzing trace with hash 143306818, now seen corresponding path program 1 times [2022-11-23 16:00:41,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:41,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583852124] [2022-11-23 16:00:41,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:41,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:42,461 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 31 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 16:00:42,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:42,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583852124] [2022-11-23 16:00:42,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583852124] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:42,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109503445] [2022-11-23 16:00:42,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:42,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:42,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:42,467 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:42,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 16:00:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:42,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-23 16:00:42,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:43,811 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:43,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:00:48,385 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:48,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109503445] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:00:48,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1863632403] [2022-11-23 16:00:48,387 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2022-11-23 16:00:48,387 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:00:48,388 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:00:48,388 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:00:48,388 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:01:04,588 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:01:10,917 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18311#(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 [2022-11-23 16:01:10,917 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:01:10,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:01:10,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 14] total 35 [2022-11-23 16:01:10,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987931789] [2022-11-23 16:01:10,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:01:10,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-23 16:01:10,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:10,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-23 16:01:10,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=3214, Unknown=0, NotChecked=0, Total=3660 [2022-11-23 16:01:10,919 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) [2022-11-23 16:01:15,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:15,132 INFO L93 Difference]: Finished difference Result 2421 states and 2921 transitions. [2022-11-23 16:01:15,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-23 16:01:15,133 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 [2022-11-23 16:01:15,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:15,137 INFO L225 Difference]: With dead ends: 2421 [2022-11-23 16:01:15,137 INFO L226 Difference]: Without dead ends: 1600 [2022-11-23 16:01:15,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 168 SyntacticMatches, 13 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3771 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=1467, Invalid=7463, Unknown=0, NotChecked=0, Total=8930 [2022-11-23 16:01:15,141 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 1166 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:15,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 1177 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 16:01:15,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2022-11-23 16:01:15,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 932. [2022-11-23 16:01:15,267 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) [2022-11-23 16:01:15,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1129 transitions. [2022-11-23 16:01:15,269 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1129 transitions. Word has length 78 [2022-11-23 16:01:15,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:15,270 INFO L495 AbstractCegarLoop]: Abstraction has 932 states and 1129 transitions. [2022-11-23 16:01:15,270 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) [2022-11-23 16:01:15,270 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1129 transitions. [2022-11-23 16:01:15,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-23 16:01:15,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:15,272 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] [2022-11-23 16:01:15,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 16:01:15,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:15,482 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)] === [2022-11-23 16:01:15,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:15,483 INFO L85 PathProgramCache]: Analyzing trace with hash 8883140, now seen corresponding path program 1 times [2022-11-23 16:01:15,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:15,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081701525] [2022-11-23 16:01:15,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:15,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:15,742 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 16:01:15,742 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:15,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081701525] [2022-11-23 16:01:15,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081701525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:01:15,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:01:15,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 16:01:15,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845903744] [2022-11-23 16:01:15,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:01:15,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:01:15,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:15,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:01:15,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:01:15,745 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) [2022-11-23 16:01:16,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:16,130 INFO L93 Difference]: Finished difference Result 2309 states and 2758 transitions. [2022-11-23 16:01:16,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 16:01:16,131 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 [2022-11-23 16:01:16,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:16,134 INFO L225 Difference]: With dead ends: 2309 [2022-11-23 16:01:16,135 INFO L226 Difference]: Without dead ends: 1154 [2022-11-23 16:01:16,136 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 [2022-11-23 16:01:16,137 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 100 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:16,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 208 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 16:01:16,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-11-23 16:01:16,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 841. [2022-11-23 16:01:16,268 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) [2022-11-23 16:01:16,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 993 transitions. [2022-11-23 16:01:16,270 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 993 transitions. Word has length 82 [2022-11-23 16:01:16,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:16,270 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 993 transitions. [2022-11-23 16:01:16,271 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) [2022-11-23 16:01:16,271 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 993 transitions. [2022-11-23 16:01:16,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-23 16:01:16,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:16,273 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] [2022-11-23 16:01:16,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-23 16:01:16,273 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)] === [2022-11-23 16:01:16,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:16,274 INFO L85 PathProgramCache]: Analyzing trace with hash 511070899, now seen corresponding path program 1 times [2022-11-23 16:01:16,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:16,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919394760] [2022-11-23 16:01:16,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:16,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:16,651 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 13 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:16,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:16,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919394760] [2022-11-23 16:01:16,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919394760] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:01:16,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053053826] [2022-11-23 16:01:16,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:16,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:16,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:01:16,654 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:01:16,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ff3047-3cb1-4b6d-86aa-ac8589751293/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 16:01:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:16,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 16:01:16,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:01:16,950 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-23 16:01:16,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:01:17,131 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-23 16:01:17,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053053826] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:01:17,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1216683030] [2022-11-23 16:01:17,134 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-23 16:01:17,134 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:01:17,134 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:01:17,134 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:01:17,134 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs