./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-examples/standard_find_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_find_ground-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS --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 104899a801011b0e3641a72d1ef00a1787a9f1724318580031d49da34b73c0d4 --- 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-8393723 [2022-11-19 08:27:26,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:27:26,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:27:26,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:27:26,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:27:26,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:27:26,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:27:26,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:27:26,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:27:26,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:27:26,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:27:26,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:27:26,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:27:26,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:27:26,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:27:26,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:27:26,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:27:26,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:27:26,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:27:26,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:27:26,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:27:26,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:27:26,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:27:26,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:27:26,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:27:26,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:27:26,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:27:26,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:27:26,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:27:26,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:27:26,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:27:26,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:27:26,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:27:26,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:27:26,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:27:26,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:27:26,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:27:26,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:27:26,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:27:26,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:27:26,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:27:26,188 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-19 08:27:26,235 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:27:26,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:27:26,236 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:27:26,237 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:27:26,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:27:26,239 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:27:26,239 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:27:26,240 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:27:26,240 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:27:26,240 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:27:26,242 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:27:26,242 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:27:26,242 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:27:26,243 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:27:26,243 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:27:26,244 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:27:26,244 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:27:26,244 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:27:26,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:27:26,246 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:27:26,246 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 08:27:26,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:27:26,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:27:26,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:27:26,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:27:26,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:27:26,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:27:26,248 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 08:27:26,249 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:27:26,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:27:26,250 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:27:26,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:27:26,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:27:26,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:27:26,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:27:26,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:27:26,253 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:27:26,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:27:26,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:27:26,254 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:27:26,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:27:26,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:27:26,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:27:26,255 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_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 104899a801011b0e3641a72d1ef00a1787a9f1724318580031d49da34b73c0d4 [2022-11-19 08:27:26,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:27:26,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:27:26,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:27:26,628 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:27:26,629 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:27:26,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/array-examples/standard_find_ground-1.i [2022-11-19 08:27:26,730 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/data/e08b5549e/3cf7a779f9274889916b67c97531a198/FLAG5056f8ed7 [2022-11-19 08:27:27,226 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:27:27,227 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/sv-benchmarks/c/array-examples/standard_find_ground-1.i [2022-11-19 08:27:27,234 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/data/e08b5549e/3cf7a779f9274889916b67c97531a198/FLAG5056f8ed7 [2022-11-19 08:27:27,599 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/data/e08b5549e/3cf7a779f9274889916b67c97531a198 [2022-11-19 08:27:27,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:27:27,605 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:27:27,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:27:27,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:27:27,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:27:27,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:27:27" (1/1) ... [2022-11-19 08:27:27,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@692dd6c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:27, skipping insertion in model container [2022-11-19 08:27:27,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:27:27" (1/1) ... [2022-11-19 08:27:27,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:27:27,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:27:27,904 WARN L234 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_d390104e-34fd-46f4-b1cb-03f84452a978/sv-benchmarks/c/array-examples/standard_find_ground-1.i[855,868] [2022-11-19 08:27:27,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:27:27,937 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:27:27,954 WARN L234 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_d390104e-34fd-46f4-b1cb-03f84452a978/sv-benchmarks/c/array-examples/standard_find_ground-1.i[855,868] [2022-11-19 08:27:27,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:27:27,994 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:27:27,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:27 WrapperNode [2022-11-19 08:27:27,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:27:27,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:27:27,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:27:27,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:27:28,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:27" (1/1) ... [2022-11-19 08:27:28,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:27" (1/1) ... [2022-11-19 08:27:28,044 INFO L138 Inliner]: procedures = 16, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2022-11-19 08:27:28,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:27:28,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:27:28,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:27:28,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:27:28,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:27" (1/1) ... [2022-11-19 08:27:28,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:27" (1/1) ... [2022-11-19 08:27:28,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:27" (1/1) ... [2022-11-19 08:27:28,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:27" (1/1) ... [2022-11-19 08:27:28,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:27" (1/1) ... [2022-11-19 08:27:28,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:27" (1/1) ... [2022-11-19 08:27:28,088 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:27" (1/1) ... [2022-11-19 08:27:28,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:27" (1/1) ... [2022-11-19 08:27:28,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:27:28,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:27:28,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:27:28,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:27:28,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:27" (1/1) ... [2022-11-19 08:27:28,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:27:28,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:27:28,134 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:27:28,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:27:28,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:27:28,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:27:28,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:27:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:27:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:27:28,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:27:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:27:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:27:28,279 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:27:28,281 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:27:28,498 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:27:28,559 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:27:28,559 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 08:27:28,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:27:28 BoogieIcfgContainer [2022-11-19 08:27:28,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:27:28,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:27:28,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:27:28,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:27:28,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:27:27" (1/3) ... [2022-11-19 08:27:28,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7fdba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:27:28, skipping insertion in model container [2022-11-19 08:27:28,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:27" (2/3) ... [2022-11-19 08:27:28,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7fdba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:27:28, skipping insertion in model container [2022-11-19 08:27:28,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:27:28" (3/3) ... [2022-11-19 08:27:28,572 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_find_ground-1.i [2022-11-19 08:27:28,593 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:27:28,593 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-19 08:27:28,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:27:28,695 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;@6aa2fd10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:27:28,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-19 08:27:28,702 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:28,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 08:27:28,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:28,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 08:27:28,713 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:27:28,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:28,726 INFO L85 PathProgramCache]: Analyzing trace with hash 105103, now seen corresponding path program 1 times [2022-11-19 08:27:28,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:28,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957257929] [2022-11-19 08:27:28,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:28,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:29,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:27:29,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:29,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957257929] [2022-11-19 08:27:29,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957257929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:27:29,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:27:29,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:27:29,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707818634] [2022-11-19 08:27:29,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:27:29,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:27:29,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:27:29,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:27:29,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:27:29,137 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:29,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:27:29,217 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-11-19 08:27:29,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:27:29,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-19 08:27:29,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:27:29,228 INFO L225 Difference]: With dead ends: 37 [2022-11-19 08:27:29,228 INFO L226 Difference]: Without dead ends: 21 [2022-11-19 08:27:29,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:27:29,235 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 3 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:27:29,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 38 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:27:29,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-19 08:27:29,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-19 08:27:29,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:29,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-11-19 08:27:29,277 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 3 [2022-11-19 08:27:29,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:27:29,277 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-11-19 08:27:29,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:29,278 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-11-19 08:27:29,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 08:27:29,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:29,278 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-19 08:27:29,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:27:29,279 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:27:29,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:29,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1163796380, now seen corresponding path program 1 times [2022-11-19 08:27:29,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:29,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184220786] [2022-11-19 08:27:29,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:29,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:29,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:27:29,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:29,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184220786] [2022-11-19 08:27:29,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184220786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:27:29,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:27:29,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:27:29,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800697005] [2022-11-19 08:27:29,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:27:29,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:27:29,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:27:29,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:27:29,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:27:29,417 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:29,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:27:29,439 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-11-19 08:27:29,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:27:29,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 08:27:29,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:27:29,440 INFO L225 Difference]: With dead ends: 21 [2022-11-19 08:27:29,440 INFO L226 Difference]: Without dead ends: 20 [2022-11-19 08:27:29,441 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 [2022-11-19 08:27:29,442 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:27:29,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 22 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:27:29,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-19 08:27:29,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-19 08:27:29,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:29,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-11-19 08:27:29,447 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 6 [2022-11-19 08:27:29,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:27:29,448 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-11-19 08:27:29,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:29,448 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-11-19 08:27:29,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 08:27:29,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:29,449 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2022-11-19 08:27:29,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:27:29,449 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:27:29,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:29,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1717949366, now seen corresponding path program 1 times [2022-11-19 08:27:29,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:29,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129572570] [2022-11-19 08:27:29,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:29,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:29,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:27:29,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:29,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129572570] [2022-11-19 08:27:29,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129572570] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:27:29,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551343429] [2022-11-19 08:27:29,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:29,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:29,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:27:29,599 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:27:29,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:27:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:29,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 08:27:29,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:27:29,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:27:29,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:27:29,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551343429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:27:29,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:27:29,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-19 08:27:29,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813836594] [2022-11-19 08:27:29,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:27:29,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:27:29,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:27:29,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:27:29,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:27:29,774 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:29,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:27:29,831 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-11-19 08:27:29,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:27:29,831 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-19 08:27:29,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:27:29,832 INFO L225 Difference]: With dead ends: 20 [2022-11-19 08:27:29,832 INFO L226 Difference]: Without dead ends: 19 [2022-11-19 08:27:29,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-19 08:27:29,834 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:27:29,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 22 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:27:29,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-19 08:27:29,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2022-11-19 08:27:29,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 16 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) [2022-11-19 08:27:29,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-11-19 08:27:29,839 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 7 [2022-11-19 08:27:29,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:27:29,839 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-11-19 08:27:29,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:29,840 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-11-19 08:27:29,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 08:27:29,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:29,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:27:29,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:27:30,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:30,047 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:27:30,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:30,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1716579037, now seen corresponding path program 1 times [2022-11-19 08:27:30,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:30,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938915590] [2022-11-19 08:27:30,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:30,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:30,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:27:30,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:30,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938915590] [2022-11-19 08:27:30,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938915590] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:27:30,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049340905] [2022-11-19 08:27:30,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:30,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:30,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:27:30,167 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:27:30,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:27:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:30,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:27:30,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:27:30,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:27:30,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:27:30,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049340905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:27:30,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:27:30,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-11-19 08:27:30,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598302593] [2022-11-19 08:27:30,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:27:30,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:27:30,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:27:30,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:27:30,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:27:30,274 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:30,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:27:30,301 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2022-11-19 08:27:30,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:27:30,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-19 08:27:30,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:27:30,329 INFO L225 Difference]: With dead ends: 28 [2022-11-19 08:27:30,329 INFO L226 Difference]: Without dead ends: 27 [2022-11-19 08:27:30,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:27:30,331 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:27:30,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 17 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:27:30,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-19 08:27:30,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2022-11-19 08:27:30,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.4375) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:30,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-11-19 08:27:30,336 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2022-11-19 08:27:30,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:27:30,336 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-11-19 08:27:30,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:30,337 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-11-19 08:27:30,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 08:27:30,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:30,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:27:30,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:27:30,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:30,555 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:27:30,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:30,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1674342527, now seen corresponding path program 1 times [2022-11-19 08:27:30,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:30,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041060378] [2022-11-19 08:27:30,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:30,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:30,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:27:30,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:30,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041060378] [2022-11-19 08:27:30,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041060378] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:27:30,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808259735] [2022-11-19 08:27:30,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:30,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:30,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:27:30,667 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:27:30,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:27:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:30,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:27:30,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:27:30,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:27:30,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:27:30,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808259735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:27:30,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:27:30,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-11-19 08:27:30,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209913572] [2022-11-19 08:27:30,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:27:30,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:27:30,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:27:30,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:27:30,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:27:30,756 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:30,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:27:30,779 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2022-11-19 08:27:30,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:27:30,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-19 08:27:30,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:27:30,780 INFO L225 Difference]: With dead ends: 20 [2022-11-19 08:27:30,781 INFO L226 Difference]: Without dead ends: 19 [2022-11-19 08:27:30,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:27:30,782 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:27:30,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:27:30,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-19 08:27:30,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-19 08:27:30,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.375) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:30,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2022-11-19 08:27:30,788 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 9 [2022-11-19 08:27:30,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:27:30,788 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2022-11-19 08:27:30,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:30,789 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2022-11-19 08:27:30,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 08:27:30,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:30,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:27:30,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:27:30,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:30,996 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:27:30,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:30,997 INFO L85 PathProgramCache]: Analyzing trace with hash -365063082, now seen corresponding path program 1 times [2022-11-19 08:27:30,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:30,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397951395] [2022-11-19 08:27:30,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:30,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:27:31,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:31,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397951395] [2022-11-19 08:27:31,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397951395] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:27:31,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432021975] [2022-11-19 08:27:31,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:31,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:31,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:27:31,104 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:27:31,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:27:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:31,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:27:31,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:27:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:27:31,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:27:31,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:27:31,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432021975] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:27:31,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [58366094] [2022-11-19 08:27:31,260 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-19 08:27:31,260 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:27:31,263 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:27:31,269 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:27:31,269 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:27:31,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,400 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 08:27:31,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-19 08:27:31,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,453 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 08:27:31,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 08:27:31,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:27:31,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-19 08:27:31,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:31,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,901 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-11-19 08:27:31,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 243 treesize of output 212 [2022-11-19 08:27:32,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-19 08:27:32,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-19 08:27:32,134 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:27:32,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [58366094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:27:32,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:27:32,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 4, 4] total 16 [2022-11-19 08:27:32,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317861039] [2022-11-19 08:27:32,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:27:32,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 08:27:32,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:27:32,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 08:27:32,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-11-19 08:27:32,991 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:33,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:27:33,084 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-11-19 08:27:33,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 08:27:33,085 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-19 08:27:33,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:27:33,086 INFO L225 Difference]: With dead ends: 27 [2022-11-19 08:27:33,086 INFO L226 Difference]: Without dead ends: 20 [2022-11-19 08:27:33,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-11-19 08:27:33,088 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:27:33,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 26 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:27:33,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-19 08:27:33,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2022-11-19 08:27:33,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.3125) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:33,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-11-19 08:27:33,095 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 10 [2022-11-19 08:27:33,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:27:33,095 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-19 08:27:33,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:33,095 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-11-19 08:27:33,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 08:27:33,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:33,096 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:27:33,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 08:27:33,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:33,302 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:27:33,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:33,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1412062608, now seen corresponding path program 1 times [2022-11-19 08:27:33,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:33,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63927596] [2022-11-19 08:27:33,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:33,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:33,405 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 08:27:33,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:33,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63927596] [2022-11-19 08:27:33,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63927596] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:27:33,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382560318] [2022-11-19 08:27:33,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:33,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:33,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:27:33,408 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:27:33,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 08:27:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:33,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:27:33,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:27:33,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2022-11-19 08:27:33,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:27:33,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:27:33,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382560318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:27:33,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:27:33,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2022-11-19 08:27:33,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225261804] [2022-11-19 08:27:33,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:27:33,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:27:33,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:27:33,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:27:33,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:27:33,532 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:33,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:27:33,554 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-11-19 08:27:33,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:27:33,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-19 08:27:33,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:27:33,555 INFO L225 Difference]: With dead ends: 19 [2022-11-19 08:27:33,555 INFO L226 Difference]: Without dead ends: 18 [2022-11-19 08:27:33,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:27:33,556 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:27:33,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 18 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:27:33,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-19 08:27:33,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-11-19 08:27:33,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 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) [2022-11-19 08:27:33,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-11-19 08:27:33,562 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2022-11-19 08:27:33,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:27:33,563 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-11-19 08:27:33,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:33,563 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-11-19 08:27:33,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 08:27:33,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:33,564 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:27:33,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 08:27:33,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:33,769 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:27:33,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:33,770 INFO L85 PathProgramCache]: Analyzing trace with hash -217549437, now seen corresponding path program 1 times [2022-11-19 08:27:33,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:33,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875477590] [2022-11-19 08:27:33,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:33,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:33,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:27:33,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:33,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875477590] [2022-11-19 08:27:33,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875477590] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:27:33,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85007436] [2022-11-19 08:27:33,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:33,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:33,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:27:33,898 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:27:33,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 08:27:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:33,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:27:33,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:27:33,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:27:33,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:27:34,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:27:34,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85007436] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:27:34,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [497707758] [2022-11-19 08:27:34,016 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-19 08:27:34,017 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:27:34,017 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:27:34,017 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:27:34,017 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:27:34,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,062 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 08:27:34,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 08:27:34,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-19 08:27:34,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:27:34,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-19 08:27:34,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,328 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:34,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,345 INFO L321 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-11-19 08:27:34,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 227 treesize of output 215 [2022-11-19 08:27:34,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-19 08:27:34,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-19 08:27:34,762 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:27:35,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [497707758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:27:35,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:27:35,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4, 4] total 18 [2022-11-19 08:27:35,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550374368] [2022-11-19 08:27:35,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:27:35,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-19 08:27:35,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:27:35,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-19 08:27:35,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-11-19 08:27:35,948 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:36,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:27:36,483 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-11-19 08:27:36,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 08:27:36,484 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 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 14 [2022-11-19 08:27:36,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:27:36,485 INFO L225 Difference]: With dead ends: 24 [2022-11-19 08:27:36,486 INFO L226 Difference]: Without dead ends: 22 [2022-11-19 08:27:36,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2022-11-19 08:27:36,490 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 30 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:27:36,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 18 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:27:36,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-19 08:27:36,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2022-11-19 08:27:36,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:36,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-11-19 08:27:36,505 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 14 [2022-11-19 08:27:36,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:27:36,505 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-11-19 08:27:36,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:36,508 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-11-19 08:27:36,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 08:27:36,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:36,509 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:27:36,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 08:27:36,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:36,716 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:27:36,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:36,716 INFO L85 PathProgramCache]: Analyzing trace with hash 90466919, now seen corresponding path program 1 times [2022-11-19 08:27:36,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:36,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456390564] [2022-11-19 08:27:36,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:36,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:36,784 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:27:36,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:36,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456390564] [2022-11-19 08:27:36,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456390564] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:27:36,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095600973] [2022-11-19 08:27:36,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:36,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:36,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:27:36,788 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:27:36,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 08:27:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:36,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:27:36,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:27:36,875 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:27:36,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:27:36,901 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:27:36,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095600973] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:27:36,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1851088143] [2022-11-19 08:27:36,904 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 08:27:36,904 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:27:36,904 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:27:36,904 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:27:36,904 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:27:36,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:36,939 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 08:27:36,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 08:27:36,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:36,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-19 08:27:36,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:36,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:27:37,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:37,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:37,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-19 08:27:37,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:37,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:37,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:37,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:37,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:37,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:37,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:37,166 INFO L321 Elim1Store]: treesize reduction 61, result has 19.7 percent of original size [2022-11-19 08:27:37,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 237 treesize of output 227 [2022-11-19 08:27:37,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-19 08:27:37,564 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:27:38,423 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '868#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (<= |ULTIMATE.start_main_~e~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~e~0#1| 2147483648)) (<= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~j~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (< 2147483646 |ULTIMATE.start_main_#t~post6#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 08:27:38,423 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:27:38,424 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:27:38,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-19 08:27:38,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088780366] [2022-11-19 08:27:38,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:27:38,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 08:27:38,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:27:38,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 08:27:38,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-11-19 08:27:38,425 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:38,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:27:38,497 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2022-11-19 08:27:38,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:27:38,502 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-19 08:27:38,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:27:38,503 INFO L225 Difference]: With dead ends: 41 [2022-11-19 08:27:38,503 INFO L226 Difference]: Without dead ends: 26 [2022-11-19 08:27:38,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2022-11-19 08:27:38,504 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:27:38,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 65 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:27:38,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-19 08:27:38,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-19 08:27:38,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 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) [2022-11-19 08:27:38,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-11-19 08:27:38,520 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 17 [2022-11-19 08:27:38,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:27:38,521 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-11-19 08:27:38,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:38,521 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-11-19 08:27:38,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-19 08:27:38,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:38,522 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:27:38,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-19 08:27:38,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:38,723 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:27:38,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:38,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1206572615, now seen corresponding path program 2 times [2022-11-19 08:27:38,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:38,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345122590] [2022-11-19 08:27:38,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:38,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:38,840 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 08:27:38,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:38,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345122590] [2022-11-19 08:27:38,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345122590] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:27:38,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18287307] [2022-11-19 08:27:38,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:27:38,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:38,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:27:38,842 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:27:38,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 08:27:38,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 08:27:38,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:27:38,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 08:27:38,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:27:38,945 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:27:38,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:27:38,988 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:27:38,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18287307] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:27:38,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [429478059] [2022-11-19 08:27:38,991 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 08:27:38,991 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:27:38,991 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:27:38,992 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:27:38,992 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:27:39,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:39,019 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 08:27:39,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-19 08:27:39,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:39,046 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 08:27:39,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 08:27:39,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:39,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:27:39,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:39,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:39,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-19 08:27:39,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:39,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:39,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:39,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:39,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:39,255 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-11-19 08:27:39,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 243 treesize of output 212 [2022-11-19 08:27:39,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-19 08:27:39,704 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:27:40,662 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1116#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (<= |ULTIMATE.start_main_~e~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~e~0#1| 2147483648)) (<= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~j~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (< 2147483646 |ULTIMATE.start_main_#t~post6#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 08:27:40,662 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:27:40,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:27:40,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 15 [2022-11-19 08:27:40,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864653126] [2022-11-19 08:27:40,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:27:40,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-19 08:27:40,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:27:40,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-19 08:27:40,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-11-19 08:27:40,664 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:40,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:27:40,893 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2022-11-19 08:27:40,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-19 08:27:40,894 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 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 23 [2022-11-19 08:27:40,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:27:40,894 INFO L225 Difference]: With dead ends: 54 [2022-11-19 08:27:40,895 INFO L226 Difference]: Without dead ends: 44 [2022-11-19 08:27:40,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2022-11-19 08:27:40,896 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 32 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:27:40,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 55 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:27:40,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-19 08:27:40,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2022-11-19 08:27:40,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:40,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-11-19 08:27:40,906 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 23 [2022-11-19 08:27:40,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:27:40,906 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-11-19 08:27:40,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:40,906 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-11-19 08:27:40,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-19 08:27:40,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:40,907 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-19 08:27:40,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-19 08:27:41,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-19 08:27:41,112 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:27:41,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:41,112 INFO L85 PathProgramCache]: Analyzing trace with hash -242464987, now seen corresponding path program 1 times [2022-11-19 08:27:41,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:41,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599749790] [2022-11-19 08:27:41,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:41,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:41,236 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 08:27:41,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:41,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599749790] [2022-11-19 08:27:41,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599749790] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:27:41,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287326896] [2022-11-19 08:27:41,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:41,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:41,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:27:41,239 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:27:41,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-19 08:27:41,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:41,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 08:27:41,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:27:41,343 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 08:27:41,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:27:41,441 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 08:27:41,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287326896] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:27:41,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [261444564] [2022-11-19 08:27:41,443 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 08:27:41,444 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:27:41,444 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:27:41,444 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:27:41,445 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:27:41,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,475 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 08:27:41,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-19 08:27:41,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,507 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 08:27:41,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 08:27:41,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:27:41,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-19 08:27:41,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:41,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,737 INFO L321 Elim1Store]: treesize reduction 66, result has 13.2 percent of original size [2022-11-19 08:27:41,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 237 treesize of output 222 [2022-11-19 08:27:41,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-19 08:27:42,117 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:27:42,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [261444564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:27:42,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:27:42,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 8, 8] total 26 [2022-11-19 08:27:42,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690876723] [2022-11-19 08:27:42,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:27:42,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-19 08:27:42,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:27:42,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-19 08:27:42,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2022-11-19 08:27:42,781 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:43,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:27:43,445 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2022-11-19 08:27:43,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 08:27:43,446 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-19 08:27:43,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:27:43,447 INFO L225 Difference]: With dead ends: 38 [2022-11-19 08:27:43,447 INFO L226 Difference]: Without dead ends: 37 [2022-11-19 08:27:43,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-11-19 08:27:43,448 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 25 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:27:43,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:27:43,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-19 08:27:43,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-19 08:27:43,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:43,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2022-11-19 08:27:43,457 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 28 [2022-11-19 08:27:43,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:27:43,457 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2022-11-19 08:27:43,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:43,458 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2022-11-19 08:27:43,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-19 08:27:43,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:43,459 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-19 08:27:43,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-19 08:27:43,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:43,663 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:27:43,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:43,664 INFO L85 PathProgramCache]: Analyzing trace with hash 816932816, now seen corresponding path program 3 times [2022-11-19 08:27:43,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:43,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398034394] [2022-11-19 08:27:43,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:43,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:43,828 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 08:27:43,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:43,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398034394] [2022-11-19 08:27:43,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398034394] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:27:43,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712213825] [2022-11-19 08:27:43,829 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 08:27:43,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:43,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:27:43,841 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:27:43,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 08:27:43,924 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 08:27:43,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:27:43,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 08:27:43,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:27:43,962 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 08:27:43,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:27:44,053 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 08:27:44,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712213825] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:27:44,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2062986757] [2022-11-19 08:27:44,061 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 08:27:44,061 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:27:44,061 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:27:44,062 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:27:44,062 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:27:44,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:44,091 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 08:27:44,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-19 08:27:44,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:44,120 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 08:27:44,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 08:27:44,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:44,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:27:44,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:44,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-11-19 08:27:44,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:44,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:44,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:44,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:44,300 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-11-19 08:27:44,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 253 treesize of output 217 [2022-11-19 08:27:44,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-19 08:27:44,602 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:27:45,396 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1791#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (<= |ULTIMATE.start_main_~e~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~e~0#1| 2147483648)) (<= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~j~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (< 2147483646 |ULTIMATE.start_main_#t~post6#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 08:27:45,396 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:27:45,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:27:45,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-11-19 08:27:45,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412959110] [2022-11-19 08:27:45,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:27:45,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-19 08:27:45,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:27:45,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-19 08:27:45,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2022-11-19 08:27:45,398 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:45,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:27:45,539 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2022-11-19 08:27:45,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 08:27:45,540 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-19 08:27:45,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:27:45,541 INFO L225 Difference]: With dead ends: 75 [2022-11-19 08:27:45,541 INFO L226 Difference]: Without dead ends: 49 [2022-11-19 08:27:45,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=201, Invalid=921, Unknown=0, NotChecked=0, Total=1122 [2022-11-19 08:27:45,542 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 30 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:27:45,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 41 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:27:45,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-19 08:27:45,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-11-19 08:27:45,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0625) internal successors, (51), 48 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) [2022-11-19 08:27:45,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2022-11-19 08:27:45,554 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 36 [2022-11-19 08:27:45,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:27:45,554 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2022-11-19 08:27:45,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:45,555 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2022-11-19 08:27:45,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-19 08:27:45,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:45,556 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-19 08:27:45,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 08:27:45,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:45,766 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:27:45,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:45,767 INFO L85 PathProgramCache]: Analyzing trace with hash 717316112, now seen corresponding path program 4 times [2022-11-19 08:27:45,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:45,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375859603] [2022-11-19 08:27:45,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:45,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:46,082 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 08:27:46,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:46,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375859603] [2022-11-19 08:27:46,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375859603] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:27:46,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127962335] [2022-11-19 08:27:46,083 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 08:27:46,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:46,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:27:46,084 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:27:46,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-19 08:27:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:46,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-19 08:27:46,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:27:46,222 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 08:27:46,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:27:46,521 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 08:27:46,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127962335] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:27:46,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [534415335] [2022-11-19 08:27:46,523 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 08:27:46,524 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:27:46,524 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:27:46,524 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:27:46,524 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:27:46,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:46,556 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 08:27:46,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 08:27:46,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:46,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-19 08:27:46,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:46,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:27:46,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:46,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-11-19 08:27:46,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:46,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:46,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:46,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:46,740 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-11-19 08:27:46,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 253 treesize of output 217 [2022-11-19 08:27:46,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-19 08:27:47,080 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:27:48,097 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2293#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (<= |ULTIMATE.start_main_~e~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~e~0#1| 2147483648)) (<= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~j~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (< 2147483646 |ULTIMATE.start_main_#t~post6#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 08:27:48,097 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:27:48,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:27:48,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-11-19 08:27:48,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574663618] [2022-11-19 08:27:48,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:27:48,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-19 08:27:48,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:27:48,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-19 08:27:48,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=1556, Unknown=0, NotChecked=0, Total=1892 [2022-11-19 08:27:48,100 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 34 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 33 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:48,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:27:48,520 INFO L93 Difference]: Finished difference Result 99 states and 110 transitions. [2022-11-19 08:27:48,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-19 08:27:48,521 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 33 states have internal predecessors, (60), 0 states have call successors, (0), 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 48 [2022-11-19 08:27:48,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:27:48,524 INFO L225 Difference]: With dead ends: 99 [2022-11-19 08:27:48,525 INFO L226 Difference]: Without dead ends: 73 [2022-11-19 08:27:48,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=689, Invalid=2617, Unknown=0, NotChecked=0, Total=3306 [2022-11-19 08:27:48,527 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 64 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:27:48,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 81 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:27:48,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-19 08:27:48,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-11-19 08:27:48,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:48,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2022-11-19 08:27:48,553 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 48 [2022-11-19 08:27:48,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:27:48,554 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2022-11-19 08:27:48,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 33 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:48,554 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2022-11-19 08:27:48,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-19 08:27:48,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:48,563 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 5, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-19 08:27:48,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-19 08:27:48,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-19 08:27:48,767 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:27:48,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:48,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1763324048, now seen corresponding path program 5 times [2022-11-19 08:27:48,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:48,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075913638] [2022-11-19 08:27:48,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:48,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:49,704 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 08:27:49,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:49,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075913638] [2022-11-19 08:27:49,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075913638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:27:49,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219730651] [2022-11-19 08:27:49,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:27:49,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:49,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:27:49,706 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:27:49,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-19 08:27:49,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 08:27:49,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:27:49,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 08:27:49,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:27:49,882 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2022-11-19 08:27:49,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:27:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2022-11-19 08:27:49,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219730651] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:27:49,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [494475163] [2022-11-19 08:27:49,946 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 08:27:49,947 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:27:49,947 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:27:49,947 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:27:49,947 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:27:49,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:49,982 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 08:27:49,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 08:27:49,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:49,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-19 08:27:50,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:50,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:27:50,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:50,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:50,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-19 08:27:50,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:50,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:50,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:50,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:50,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:50,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:50,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:50,187 INFO L321 Elim1Store]: treesize reduction 61, result has 19.7 percent of original size [2022-11-19 08:27:50,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 237 treesize of output 227 [2022-11-19 08:27:50,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-19 08:27:50,519 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:27:51,622 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3021#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (<= |ULTIMATE.start_main_~e~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~e~0#1| 2147483648)) (<= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~j~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (< 2147483646 |ULTIMATE.start_main_#t~post6#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 08:27:51,622 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:27:51,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:27:51,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 4, 4] total 36 [2022-11-19 08:27:51,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127483887] [2022-11-19 08:27:51,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:27:51,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-19 08:27:51,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:27:51,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-19 08:27:51,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=1737, Unknown=0, NotChecked=0, Total=2070 [2022-11-19 08:27:51,625 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:52,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:27:52,531 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions. [2022-11-19 08:27:52,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-19 08:27:52,532 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 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 72 [2022-11-19 08:27:52,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:27:52,532 INFO L225 Difference]: With dead ends: 103 [2022-11-19 08:27:52,532 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 08:27:52,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 200 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1478 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1212, Invalid=4794, Unknown=0, NotChecked=0, Total=6006 [2022-11-19 08:27:52,535 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 152 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:27:52,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 26 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:27:52,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 08:27:52,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 08:27:52,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:52,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 08:27:52,536 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2022-11-19 08:27:52,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:27:52,536 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 08:27:52,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:52,537 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 08:27:52,537 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 08:27:52,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-11-19 08:27:52,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-11-19 08:27:52,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-11-19 08:27:52,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-11-19 08:27:52,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-11-19 08:27:52,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-11-19 08:27:52,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-19 08:27:52,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-19 08:27:52,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 08:27:53,586 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-19 08:27:53,586 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2022-11-19 08:27:53,586 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 08:27:53,587 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2022-11-19 08:27:53,587 INFO L899 garLoopResultBuilder]: For program point L28-3(line 28) no Hoare annotation was computed. [2022-11-19 08:27:53,587 INFO L899 garLoopResultBuilder]: For program point L28-4(line 28) no Hoare annotation was computed. [2022-11-19 08:27:53,588 INFO L895 garLoopResultBuilder]: At program point L28-5(lines 28 30) the Hoare annotation is: (let ((.cse11 (= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))) |ULTIMATE.start_main_~e~0#1|))) (let ((.cse2 (<= |#NULL.offset| 0)) (.cse8 (<= 0 |#NULL.offset|)) (.cse0 (<= 0 |ULTIMATE.start_main_~#a~0#1.base|)) (.cse1 (<= |ULTIMATE.start_main_~e~0#1| 2147483647)) (.cse3 (<= 0 (+ |ULTIMATE.start_main_~e~0#1| 2147483648))) (.cse4 (or (<= 100000 |ULTIMATE.start_main_~i~0#1|) .cse11)) (.cse5 (<= 0 |ULTIMATE.start_main_~i~0#1|)) (.cse6 (= |ULTIMATE.start_main_~#a~0#1.offset| 0)) (.cse7 (<= 100000 |ULTIMATE.start_main_~j~0#1|)) (.cse9 (<= 0 |#StackHeapBarrier|)) (.cse10 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= |ULTIMATE.start_main_~x~0#1| 1) .cse5 .cse6 .cse7 (<= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~x~0#1|) .cse8 .cse9 .cse10) (and .cse0 .cse1 .cse2 .cse3 .cse5 .cse6 .cse7 .cse11 (= |ULTIMATE.start_main_~x~0#1| 0) .cse8 (<= |ULTIMATE.start_main_~i~0#1| 1) .cse9 .cse10) (and (<= 0 |ULTIMATE.start_main_~x~0#1|) .cse0 (<= |ULTIMATE.start_main_~i~0#1| 2147483647) .cse1 .cse3 .cse4 .cse5 (<= |ULTIMATE.start_main_~j~0#1| 2147483647) .cse6 .cse7 (= |#NULL.offset| 0) .cse9 .cse10)))) [2022-11-19 08:27:53,588 INFO L899 garLoopResultBuilder]: For program point L24-2(lines 24 26) no Hoare annotation was computed. [2022-11-19 08:27:53,588 INFO L895 garLoopResultBuilder]: At program point L24-4(lines 15 32) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~e~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~e~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~j~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-11-19 08:27:53,588 INFO L899 garLoopResultBuilder]: For program point L24-5(lines 24 26) no Hoare annotation was computed. [2022-11-19 08:27:53,588 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-11-19 08:27:53,588 INFO L899 garLoopResultBuilder]: For program point L20-4(line 20) no Hoare annotation was computed. [2022-11-19 08:27:53,589 INFO L895 garLoopResultBuilder]: At program point L20-5(lines 20 22) the Hoare annotation is: (and (or (let ((.cse0 (select |#memory_int| 1))) (and (= 25 (select |#length| 2)) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#a~0#1.base|) (= 2 (select |#length| 1)) (= 400000 (select |#length| |ULTIMATE.start_main_~#a~0#1.base|)) (= (select |#valid| 1) 1) (= (select |#valid| |ULTIMATE.start_main_~#a~0#1.base|) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= |ULTIMATE.start_main_~j~0#1| 0) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|))) (and (<= 1 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647))) (<= 0 |#NULL.base|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (<= |ULTIMATE.start_main_~i~0#1| 0) (<= 0 |ULTIMATE.start_main_~#a~0#1.offset|) (<= |ULTIMATE.start_main_~e~0#1| 2147483647) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~e~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~#a~0#1.offset| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|)) [2022-11-19 08:27:53,589 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2022-11-19 08:27:53,589 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 08:27:53,589 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2022-11-19 08:27:53,589 INFO L899 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2022-11-19 08:27:53,589 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-11-19 08:27:53,589 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-19 08:27:53,601 INFO L444 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:27:53,604 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 08:27:53,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:27:53 BoogieIcfgContainer [2022-11-19 08:27:53,648 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 08:27:53,649 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 08:27:53,649 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 08:27:53,649 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 08:27:53,650 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:27:28" (3/4) ... [2022-11-19 08:27:53,653 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 08:27:53,665 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-19 08:27:53,666 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-19 08:27:53,666 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-19 08:27:53,666 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 08:27:53,706 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 08:27:53,706 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 08:27:53,707 INFO L158 Benchmark]: Toolchain (without parser) took 26102.60ms. Allocated memory was 127.9MB in the beginning and 270.5MB in the end (delta: 142.6MB). Free memory was 95.5MB in the beginning and 183.6MB in the end (delta: -88.2MB). Peak memory consumption was 53.9MB. Max. memory is 16.1GB. [2022-11-19 08:27:53,707 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 88.1MB. Free memory was 42.4MB in the beginning and 42.3MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:27:53,708 INFO L158 Benchmark]: CACSL2BoogieTranslator took 386.74ms. Allocated memory is still 127.9MB. Free memory was 95.2MB in the beginning and 103.7MB in the end (delta: -8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 08:27:53,708 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.26ms. Allocated memory is still 127.9MB. Free memory was 103.7MB in the beginning and 102.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:27:53,708 INFO L158 Benchmark]: Boogie Preprocessor took 50.91ms. Allocated memory is still 127.9MB. Free memory was 102.0MB in the beginning and 100.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:27:53,709 INFO L158 Benchmark]: RCFGBuilder took 464.26ms. Allocated memory is still 127.9MB. Free memory was 100.8MB in the beginning and 87.8MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 08:27:53,709 INFO L158 Benchmark]: TraceAbstraction took 25083.81ms. Allocated memory was 127.9MB in the beginning and 270.5MB in the end (delta: 142.6MB). Free memory was 86.9MB in the beginning and 185.7MB in the end (delta: -98.8MB). Peak memory consumption was 147.2MB. Max. memory is 16.1GB. [2022-11-19 08:27:53,710 INFO L158 Benchmark]: Witness Printer took 57.78ms. Allocated memory is still 270.5MB. Free memory was 185.7MB in the beginning and 183.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:27:53,711 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 88.1MB. Free memory was 42.4MB in the beginning and 42.3MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 386.74ms. Allocated memory is still 127.9MB. Free memory was 95.2MB in the beginning and 103.7MB in the end (delta: -8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.26ms. Allocated memory is still 127.9MB. Free memory was 103.7MB in the beginning and 102.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.91ms. Allocated memory is still 127.9MB. Free memory was 102.0MB in the beginning and 100.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 464.26ms. Allocated memory is still 127.9MB. Free memory was 100.8MB in the beginning and 87.8MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 25083.81ms. Allocated memory was 127.9MB in the beginning and 270.5MB in the end (delta: 142.6MB). Free memory was 86.9MB in the beginning and 185.7MB in the end (delta: -98.8MB). Peak memory consumption was 147.2MB. Max. memory is 16.1GB. * Witness Printer took 57.78ms. Allocated memory is still 270.5MB. Free memory was 185.7MB in the beginning and 183.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 24.9s, OverallIterations: 14, TraceHistogramMax: 15, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 413 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 413 mSDsluCounter, 443 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 337 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 789 IncrementalHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 106 mSDtfsCounter, 789 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 937 GetRequests, 627 SyntacticMatches, 3 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3836 ImplicationChecksByTransitivity, 10.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=13, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 19 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 30 NumberOfFragments, 301 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1389 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 3 FomulaSimplificationsInter, 3768 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 577 NumberOfCodeBlocks, 516 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 791 ConstructedInterpolants, 0 QuantifiedInterpolants, 1444 SizeOfPredicates, 28 NumberOfNonLiveVariables, 1123 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 34 InterpolantComputations, 6 PerfectInterpolantSequences, 1064/1706 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 2.3s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 34, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 95, TOOLS_POST_TIME: 1.9s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 95, TOOLS_QUANTIFIERELIM_TIME: 1.8s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 171, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 10, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 11, DOMAIN_WIDEN_TIME: 0.2s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 17, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 34, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 6, LOOP_SUMMARIZER_CACHE_MISSES: 6, LOOP_SUMMARIZER_OVERALL_TIME: 1.4s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.4s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 17, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 463, DAG_COMPRESSION_RETAINED_NODES: 118, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((25 == unknown-#length-unknown[2] && unknown-#StackHeapBarrier-unknown < a) && 2 == unknown-#length-unknown[1]) && 400000 == unknown-#length-unknown[a]) && \valid[1] == 1) && \valid[a] == 1) && \valid[0] == 0) && \valid[2] == 1) && unknown-#memory_int-unknown[1][0] == 48) && j == 0) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) || (1 <= j && j <= 2147483647)) && 0 <= #NULL) && 0 <= a) && i <= 0) && 0 <= a) && e <= 2147483647) && #NULL <= 0) && 0 <= e + 2147483648) && 0 <= i) && a <= 0) && #NULL <= 0) && 0 <= #NULL) && 0 <= unknown-#StackHeapBarrier-unknown - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (((((((((0 <= a && i <= 2147483647) && e <= 2147483647) && 0 <= e + 2147483648) && 0 <= i) && j <= 2147483647) && a == 0) && 100000 <= j) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((((((((((0 <= a && e <= 2147483647) && #NULL <= 0) && 0 <= e + 2147483648) && (100000 <= i || unknown-#memory_int-unknown[a][a + i * 4] == e)) && x <= 1) && 0 <= i) && a == 0) && 100000 <= j) && i <= x) && 0 <= #NULL) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((((((((0 <= a && e <= 2147483647) && #NULL <= 0) && 0 <= e + 2147483648) && 0 <= i) && a == 0) && 100000 <= j) && unknown-#memory_int-unknown[a][a + i * 4] == e) && x == 0) && 0 <= #NULL) && i <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || ((((((((((((0 <= x && 0 <= a) && i <= 2147483647) && e <= 2147483647) && 0 <= e + 2147483648) && (100000 <= i || unknown-#memory_int-unknown[a][a + i * 4] == e)) && 0 <= i) && j <= 2147483647) && a == 0) && 100000 <= j) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) RESULT: Ultimate proved your program to be correct! [2022-11-19 08:27:53,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d390104e-34fd-46f4-b1cb-03f84452a978/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE