./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/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_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/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 64bit --witnessprinter.graph.data.programhash 9b244382de79ee7e63c5a39dc4ba4645eb8228d285c75cf6df9353c232d1a135 --- 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 06:52:34,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:52:34,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:52:34,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:52:34,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:52:34,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:52:34,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:52:34,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:52:34,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:52:34,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:52:34,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:52:34,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:52:34,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:52:34,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:52:34,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:52:34,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:52:34,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:52:34,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:52:34,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:52:34,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:52:34,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:52:34,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:52:34,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:52:34,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:52:34,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:52:34,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:52:34,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:52:34,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:52:34,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:52:34,282 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:52:34,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:52:34,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:52:34,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:52:34,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:52:34,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:52:34,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:52:34,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:52:34,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:52:34,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:52:34,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:52:34,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:52:34,292 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-19 06:52:34,317 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:52:34,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:52:34,318 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:52:34,318 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:52:34,319 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:52:34,319 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:52:34,319 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:52:34,320 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:52:34,320 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:52:34,321 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:52:34,321 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:52:34,321 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:52:34,322 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:52:34,322 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:52:34,322 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:52:34,323 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:52:34,323 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:52:34,323 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:52:34,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:52:34,325 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:52:34,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:52:34,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:52:34,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:52:34,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:52:34,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:52:34,327 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 06:52:34,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:52:34,327 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:52:34,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:52:34,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:52:34,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:52:34,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:52:34,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:52:34,329 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:52:34,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:52:34,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:52:34,330 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:52:34,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:52:34,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:52:34,331 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:52:34,332 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_6eaac69f-a536-4689-bc24-0a91b4a66208/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b244382de79ee7e63c5a39dc4ba4645eb8228d285c75cf6df9353c232d1a135 [2022-11-19 06:52:34,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:52:34,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:52:34,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:52:34,636 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:52:34,637 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:52:34,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c [2022-11-19 06:52:34,724 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/data/0153de2e2/69fa49031b5447df8a0b5668eb33a6b7/FLAG82ade214d [2022-11-19 06:52:35,285 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:52:35,286 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c [2022-11-19 06:52:35,291 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/data/0153de2e2/69fa49031b5447df8a0b5668eb33a6b7/FLAG82ade214d [2022-11-19 06:52:35,688 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/data/0153de2e2/69fa49031b5447df8a0b5668eb33a6b7 [2022-11-19 06:52:35,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:52:35,695 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:52:35,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:52:35,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:52:35,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:52:35,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:52:35" (1/1) ... [2022-11-19 06:52:35,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5175e916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:35, skipping insertion in model container [2022-11-19 06:52:35,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:52:35" (1/1) ... [2022-11-19 06:52:35,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:52:35,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:52:35,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:52:35,934 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:52:35,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:52:35,966 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:52:35,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:35 WrapperNode [2022-11-19 06:52:35,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:52:35,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:52:35,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:52:35,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:52:35,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:35" (1/1) ... [2022-11-19 06:52:35,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:35" (1/1) ... [2022-11-19 06:52:36,007 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2022-11-19 06:52:36,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:52:36,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:52:36,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:52:36,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:52:36,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:35" (1/1) ... [2022-11-19 06:52:36,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:35" (1/1) ... [2022-11-19 06:52:36,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:35" (1/1) ... [2022-11-19 06:52:36,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:35" (1/1) ... [2022-11-19 06:52:36,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:35" (1/1) ... [2022-11-19 06:52:36,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:35" (1/1) ... [2022-11-19 06:52:36,037 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:35" (1/1) ... [2022-11-19 06:52:36,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:35" (1/1) ... [2022-11-19 06:52:36,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:52:36,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:52:36,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:52:36,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:52:36,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:35" (1/1) ... [2022-11-19 06:52:36,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:52:36,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:36,084 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:52:36,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:52:36,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:52:36,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:52:36,218 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:52:36,219 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:52:36,377 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:52:36,410 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:52:36,418 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 06:52:36,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:52:36 BoogieIcfgContainer [2022-11-19 06:52:36,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:52:36,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:52:36,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:52:36,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:52:36,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:52:35" (1/3) ... [2022-11-19 06:52:36,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4598af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:52:36, skipping insertion in model container [2022-11-19 06:52:36,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:35" (2/3) ... [2022-11-19 06:52:36,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4598af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:52:36, skipping insertion in model container [2022-11-19 06:52:36,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:52:36" (3/3) ... [2022-11-19 06:52:36,438 INFO L112 eAbstractionObserver]: Analyzing ICFG Avery-FLOPS2006-Table1.c [2022-11-19 06:52:36,457 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:52:36,458 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-19 06:52:36,539 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:52:36,551 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;@2661ab6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:52:36,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-19 06:52:36,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 21 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 06:52:36,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 06:52:36,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:36,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 06:52:36,575 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:52:36,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:36,583 INFO L85 PathProgramCache]: Analyzing trace with hash 2507698, now seen corresponding path program 1 times [2022-11-19 06:52:36,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:36,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871648614] [2022-11-19 06:52:36,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:36,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:36,889 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 06:52:36,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:36,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871648614] [2022-11-19 06:52:36,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871648614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:36,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:36,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:52:36,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550357306] [2022-11-19 06:52:36,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:36,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:52:36,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:36,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:52:36,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:36,988 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 21 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) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:37,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:37,125 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2022-11-19 06:52:37,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:52:37,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-19 06:52:37,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:37,143 INFO L225 Difference]: With dead ends: 38 [2022-11-19 06:52:37,143 INFO L226 Difference]: Without dead ends: 31 [2022-11-19 06:52:37,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:37,150 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 24 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:37,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 20 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:52:37,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-19 06:52:37,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 19. [2022-11-19 06:52:37,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 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 06:52:37,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-11-19 06:52:37,198 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 4 [2022-11-19 06:52:37,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:37,199 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-11-19 06:52:37,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:37,200 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-11-19 06:52:37,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:52:37,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:37,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:52:37,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:52:37,202 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:52:37,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:37,203 INFO L85 PathProgramCache]: Analyzing trace with hash 77779592, now seen corresponding path program 1 times [2022-11-19 06:52:37,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:37,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250339143] [2022-11-19 06:52:37,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:37,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:37,296 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 06:52:37,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:37,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250339143] [2022-11-19 06:52:37,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250339143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:37,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:37,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:52:37,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012811512] [2022-11-19 06:52:37,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:37,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:52:37,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:37,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:52:37,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:37,306 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:37,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:37,383 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-11-19 06:52:37,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:52:37,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 06:52:37,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:37,386 INFO L225 Difference]: With dead ends: 31 [2022-11-19 06:52:37,386 INFO L226 Difference]: Without dead ends: 21 [2022-11-19 06:52:37,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:52:37,388 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:37,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 29 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:52:37,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-19 06:52:37,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2022-11-19 06:52:37,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 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 06:52:37,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-11-19 06:52:37,402 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 5 [2022-11-19 06:52:37,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:37,402 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-11-19 06:52:37,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:37,404 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-11-19 06:52:37,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:52:37,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:37,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 06:52:37,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:52:37,409 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:52:37,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:37,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1885067980, now seen corresponding path program 1 times [2022-11-19 06:52:37,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:37,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196177107] [2022-11-19 06:52:37,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:37,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:37,467 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 06:52:37,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:37,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196177107] [2022-11-19 06:52:37,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196177107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:37,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:37,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:52:37,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384100336] [2022-11-19 06:52:37,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:37,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:52:37,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:37,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:52:37,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:52:37,470 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:37,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:37,494 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-11-19 06:52:37,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:52:37,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 06:52:37,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:37,496 INFO L225 Difference]: With dead ends: 24 [2022-11-19 06:52:37,496 INFO L226 Difference]: Without dead ends: 23 [2022-11-19 06:52:37,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:52:37,498 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:37,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 22 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:52:37,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-19 06:52:37,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2022-11-19 06:52:37,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.4375) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:37,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-11-19 06:52:37,504 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 6 [2022-11-19 06:52:37,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:37,505 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-11-19 06:52:37,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:37,506 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-11-19 06:52:37,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 06:52:37,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:37,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:37,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:52:37,507 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:52:37,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:37,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1692434816, now seen corresponding path program 1 times [2022-11-19 06:52:37,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:37,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083557710] [2022-11-19 06:52:37,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:37,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:37,552 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 06:52:37,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:37,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083557710] [2022-11-19 06:52:37,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083557710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:37,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:37,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:52:37,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404467143] [2022-11-19 06:52:37,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:37,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:52:37,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:37,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:52:37,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:52:37,556 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:37,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:37,578 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-11-19 06:52:37,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:52:37,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-19 06:52:37,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:37,580 INFO L225 Difference]: With dead ends: 30 [2022-11-19 06:52:37,580 INFO L226 Difference]: Without dead ends: 28 [2022-11-19 06:52:37,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:52:37,582 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:37,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 15 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:52:37,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-19 06:52:37,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2022-11-19 06:52:37,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:37,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-11-19 06:52:37,589 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 7 [2022-11-19 06:52:37,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:37,590 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-11-19 06:52:37,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:37,590 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-11-19 06:52:37,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 06:52:37,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:37,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:37,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:52:37,591 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:52:37,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:37,592 INFO L85 PathProgramCache]: Analyzing trace with hash 704600376, now seen corresponding path program 1 times [2022-11-19 06:52:37,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:37,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062323527] [2022-11-19 06:52:37,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:37,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:37,625 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 06:52:37,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:37,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062323527] [2022-11-19 06:52:37,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062323527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:37,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:37,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:52:37,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864085084] [2022-11-19 06:52:37,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:37,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:52:37,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:37,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:52:37,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:52:37,628 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 06:52:37,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:37,652 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-11-19 06:52:37,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:52:37,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 06:52:37,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:37,653 INFO L225 Difference]: With dead ends: 27 [2022-11-19 06:52:37,653 INFO L226 Difference]: Without dead ends: 26 [2022-11-19 06:52:37,654 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 06:52:37,655 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:37,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:52:37,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-19 06:52:37,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-19 06:52:37,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.380952380952381) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:37,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-11-19 06:52:37,660 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 10 [2022-11-19 06:52:37,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:37,661 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-11-19 06:52:37,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 06:52:37,661 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-11-19 06:52:37,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 06:52:37,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:37,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:37,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:52:37,662 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:52:37,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:37,663 INFO L85 PathProgramCache]: Analyzing trace with hash 367775243, now seen corresponding path program 1 times [2022-11-19 06:52:37,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:37,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684691786] [2022-11-19 06:52:37,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:37,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:37,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:37,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:37,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684691786] [2022-11-19 06:52:37,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684691786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:37,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:37,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:52:37,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271757617] [2022-11-19 06:52:37,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:37,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:52:37,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:37,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:52:37,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:37,713 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 06:52:37,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:37,752 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-11-19 06:52:37,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:52:37,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-19 06:52:37,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:37,754 INFO L225 Difference]: With dead ends: 26 [2022-11-19 06:52:37,754 INFO L226 Difference]: Without dead ends: 25 [2022-11-19 06:52:37,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:37,755 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:37,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 14 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:52:37,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-19 06:52:37,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-19 06:52:37,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 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 06:52:37,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-11-19 06:52:37,761 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 11 [2022-11-19 06:52:37,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:37,761 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-11-19 06:52:37,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 06:52:37,771 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-11-19 06:52:37,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 06:52:37,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:37,771 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-11-19 06:52:37,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 06:52:37,772 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:52:37,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:37,772 INFO L85 PathProgramCache]: Analyzing trace with hash 366507140, now seen corresponding path program 1 times [2022-11-19 06:52:37,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:37,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818461920] [2022-11-19 06:52:37,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:37,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:37,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:37,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:37,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818461920] [2022-11-19 06:52:37,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818461920] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:52:37,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605497005] [2022-11-19 06:52:37,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:37,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:37,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:37,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:52:37,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:52:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:37,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:52:37,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:38,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:38,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:38,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:38,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605497005] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:38,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1403662086] [2022-11-19 06:52:38,099 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 06:52:38,100 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:52:38,104 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:52:38,112 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:52:38,112 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:52:38,322 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:52:38,741 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '474#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483645) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 0 (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2022-11-19 06:52:38,741 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:52:38,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:52:38,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-19 06:52:38,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704094211] [2022-11-19 06:52:38,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:52:38,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:52:38,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:38,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:52:38,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-19 06:52:38,744 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:38,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:38,833 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2022-11-19 06:52:38,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:52:38,834 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-19 06:52:38,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:38,835 INFO L225 Difference]: With dead ends: 69 [2022-11-19 06:52:38,835 INFO L226 Difference]: Without dead ends: 67 [2022-11-19 06:52:38,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-19 06:52:38,836 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 37 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:38,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 40 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:52:38,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-19 06:52:38,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 50. [2022-11-19 06:52:38,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 49 states have internal predecessors, (57), 0 states have call successors, (0), 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 06:52:38,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2022-11-19 06:52:38,845 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 11 [2022-11-19 06:52:38,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:38,846 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2022-11-19 06:52:38,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:38,846 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2022-11-19 06:52:38,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 06:52:38,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:38,847 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:38,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:39,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:39,053 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:52:39,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:39,054 INFO L85 PathProgramCache]: Analyzing trace with hash -2146418545, now seen corresponding path program 1 times [2022-11-19 06:52:39,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:39,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214595789] [2022-11-19 06:52:39,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:39,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:39,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:52:39,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:39,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214595789] [2022-11-19 06:52:39,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214595789] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:52:39,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444655142] [2022-11-19 06:52:39,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:39,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:39,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:39,104 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:52:39,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:52:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:39,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:52:39,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:39,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:52:39,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:39,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:52:39,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444655142] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:39,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1070297138] [2022-11-19 06:52:39,233 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 06:52:39,234 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:52:39,234 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:52:39,234 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:52:39,235 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:52:39,463 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:52:39,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1070297138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:39,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:52:39,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [3, 3, 3] total 14 [2022-11-19 06:52:39,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360290973] [2022-11-19 06:52:39,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:39,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-19 06:52:39,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:39,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-19 06:52:39,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-11-19 06:52:39,903 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 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 06:52:41,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:41,160 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2022-11-19 06:52:41,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 06:52:41,161 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-19 06:52:41,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:41,162 INFO L225 Difference]: With dead ends: 56 [2022-11-19 06:52:41,162 INFO L226 Difference]: Without dead ends: 54 [2022-11-19 06:52:41,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2022-11-19 06:52:41,163 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 57 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:41,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 0 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:52:41,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-19 06:52:41,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 38. [2022-11-19 06:52:41,170 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 06:52:41,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-11-19 06:52:41,175 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 15 [2022-11-19 06:52:41,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:41,175 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-11-19 06:52:41,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 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 06:52:41,176 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-11-19 06:52:41,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 06:52:41,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:41,177 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:41,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:41,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:41,384 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:52:41,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:41,384 INFO L85 PathProgramCache]: Analyzing trace with hash -481704650, now seen corresponding path program 1 times [2022-11-19 06:52:41,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:41,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881245253] [2022-11-19 06:52:41,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:41,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:41,440 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:41,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:41,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881245253] [2022-11-19 06:52:41,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881245253] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:52:41,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25746497] [2022-11-19 06:52:41,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:41,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:41,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:41,443 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:52:41,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 06:52:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:41,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:52:41,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:41,529 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:41,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:41,592 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:41,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25746497] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:41,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [5903889] [2022-11-19 06:52:41,595 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 06:52:41,595 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:52:41,596 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:52:41,596 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:52:41,596 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:52:41,780 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:52:42,220 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '961#(and (< (+ 2147483647 |ULTIMATE.start_main_~z~0#1|) 0) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2022-11-19 06:52:42,220 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:52:42,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:52:42,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-19 06:52:42,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84357048] [2022-11-19 06:52:42,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:52:42,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:52:42,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:42,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:52:42,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-11-19 06:52:42,222 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 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 06:52:42,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:42,253 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2022-11-19 06:52:42,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:52:42,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 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 18 [2022-11-19 06:52:42,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:42,256 INFO L225 Difference]: With dead ends: 54 [2022-11-19 06:52:42,256 INFO L226 Difference]: Without dead ends: 53 [2022-11-19 06:52:42,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-11-19 06:52:42,257 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:42,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 27 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:52:42,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-19 06:52:42,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-11-19 06:52:42,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 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 06:52:42,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2022-11-19 06:52:42,267 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 18 [2022-11-19 06:52:42,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:42,267 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2022-11-19 06:52:42,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 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 06:52:42,267 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2022-11-19 06:52:42,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-19 06:52:42,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:42,268 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1] [2022-11-19 06:52:42,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:42,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:42,474 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:52:42,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:42,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1672464692, now seen corresponding path program 2 times [2022-11-19 06:52:42,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:42,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838835508] [2022-11-19 06:52:42,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:42,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:42,550 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:42,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:42,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838835508] [2022-11-19 06:52:42,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838835508] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:52:42,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720296180] [2022-11-19 06:52:42,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:52:42,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:42,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:42,552 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:52:42,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 06:52:42,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 06:52:42,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:52:42,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 06:52:42,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:42,643 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:42,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:42,746 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:42,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720296180] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:42,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1871041836] [2022-11-19 06:52:42,749 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 06:52:42,749 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:52:42,749 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:52:42,750 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:52:42,750 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:52:42,828 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:52:43,227 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1260#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483645) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 0 (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2022-11-19 06:52:43,227 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:52:43,227 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:52:43,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-19 06:52:43,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286311806] [2022-11-19 06:52:43,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:52:43,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 06:52:43,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:43,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 06:52:43,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2022-11-19 06:52:43,229 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 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 06:52:43,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:43,362 INFO L93 Difference]: Finished difference Result 229 states and 246 transitions. [2022-11-19 06:52:43,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 06:52:43,362 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-19 06:52:43,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:43,364 INFO L225 Difference]: With dead ends: 229 [2022-11-19 06:52:43,364 INFO L226 Difference]: Without dead ends: 228 [2022-11-19 06:52:43,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 60 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2022-11-19 06:52:43,365 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 135 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:43,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 71 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:52:43,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-19 06:52:43,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 83. [2022-11-19 06:52:43,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 81 states have (on average 1.1481481481481481) internal successors, (93), 82 states have internal predecessors, (93), 0 states have call successors, (0), 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 06:52:43,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2022-11-19 06:52:43,380 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 26 [2022-11-19 06:52:43,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:43,380 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2022-11-19 06:52:43,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 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 06:52:43,381 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2022-11-19 06:52:43,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-19 06:52:43,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:43,382 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:43,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:43,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:43,587 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:52:43,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:43,588 INFO L85 PathProgramCache]: Analyzing trace with hash -919616723, now seen corresponding path program 2 times [2022-11-19 06:52:43,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:43,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68138560] [2022-11-19 06:52:43,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:43,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:43,682 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:43,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:43,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68138560] [2022-11-19 06:52:43,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68138560] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:52:43,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627579953] [2022-11-19 06:52:43,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:52:43,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:43,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:43,687 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:52:43,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 06:52:43,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 06:52:43,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:52:43,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 06:52:43,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:43,815 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:43,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:43,916 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:43,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627579953] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:43,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [916389983] [2022-11-19 06:52:43,919 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 06:52:43,919 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:52:43,920 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:52:43,920 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:52:43,920 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:52:44,085 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:52:44,541 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1843#(and (< (+ 2147483647 |ULTIMATE.start_main_~z~0#1|) 0) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2022-11-19 06:52:44,542 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:52:44,542 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:52:44,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-19 06:52:44,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148882020] [2022-11-19 06:52:44,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:52:44,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 06:52:44,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:44,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 06:52:44,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2022-11-19 06:52:44,543 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 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 06:52:44,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:44,599 INFO L93 Difference]: Finished difference Result 114 states and 129 transitions. [2022-11-19 06:52:44,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 06:52:44,600 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 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 33 [2022-11-19 06:52:44,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:44,601 INFO L225 Difference]: With dead ends: 114 [2022-11-19 06:52:44,601 INFO L226 Difference]: Without dead ends: 113 [2022-11-19 06:52:44,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 78 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2022-11-19 06:52:44,602 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:44,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 45 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:52:44,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-19 06:52:44,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2022-11-19 06:52:44,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 111 states have (on average 1.1081081081081081) internal successors, (123), 112 states have internal predecessors, (123), 0 states have call successors, (0), 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 06:52:44,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 123 transitions. [2022-11-19 06:52:44,617 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 123 transitions. Word has length 33 [2022-11-19 06:52:44,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:44,618 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 123 transitions. [2022-11-19 06:52:44,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 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 06:52:44,618 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 123 transitions. [2022-11-19 06:52:44,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-19 06:52:44,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:44,621 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1] [2022-11-19 06:52:44,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:44,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-19 06:52:44,822 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:52:44,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:44,822 INFO L85 PathProgramCache]: Analyzing trace with hash 996441908, now seen corresponding path program 3 times [2022-11-19 06:52:44,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:44,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789688633] [2022-11-19 06:52:44,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:44,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:45,117 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:45,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:45,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789688633] [2022-11-19 06:52:45,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789688633] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:52:45,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989822165] [2022-11-19 06:52:45,118 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:52:45,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:45,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:45,127 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:52:45,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 06:52:45,186 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:52:45,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:52:45,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 06:52:45,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:45,296 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:45,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:45,587 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:45,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989822165] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:45,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [697092495] [2022-11-19 06:52:45,590 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 06:52:45,590 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:52:45,590 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:52:45,590 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:52:45,590 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:52:45,687 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:52:46,248 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2478#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483645) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 0 (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2022-11-19 06:52:46,248 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:52:46,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:52:46,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-19 06:52:46,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345961819] [2022-11-19 06:52:46,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:52:46,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 06:52:46,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:46,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 06:52:46,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=555, Unknown=0, NotChecked=0, Total=870 [2022-11-19 06:52:46,250 INFO L87 Difference]: Start difference. First operand 113 states and 123 transitions. Second operand has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 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 06:52:46,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:46,584 INFO L93 Difference]: Finished difference Result 829 states and 864 transitions. [2022-11-19 06:52:46,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 06:52:46,585 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-19 06:52:46,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:46,589 INFO L225 Difference]: With dead ends: 829 [2022-11-19 06:52:46,589 INFO L226 Difference]: Without dead ends: 828 [2022-11-19 06:52:46,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 138 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=315, Invalid=555, Unknown=0, NotChecked=0, Total=870 [2022-11-19 06:52:46,591 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 257 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:46,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 143 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:52:46,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2022-11-19 06:52:46,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 173. [2022-11-19 06:52:46,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 171 states have (on average 1.1403508771929824) internal successors, (195), 172 states have internal predecessors, (195), 0 states have call successors, (0), 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 06:52:46,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 195 transitions. [2022-11-19 06:52:46,628 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 195 transitions. Word has length 56 [2022-11-19 06:52:46,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:46,631 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 195 transitions. [2022-11-19 06:52:46,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 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 06:52:46,631 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 195 transitions. [2022-11-19 06:52:46,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-19 06:52:46,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:46,641 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:46,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:46,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-19 06:52:46,847 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:52:46,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:46,847 INFO L85 PathProgramCache]: Analyzing trace with hash 173255693, now seen corresponding path program 3 times [2022-11-19 06:52:46,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:46,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740051569] [2022-11-19 06:52:46,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:46,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:47,070 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 1 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:47,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:47,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740051569] [2022-11-19 06:52:47,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740051569] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:52:47,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784138573] [2022-11-19 06:52:47,072 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:52:47,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:47,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:47,073 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:52:47,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 06:52:47,132 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:52:47,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:52:47,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 06:52:47,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:47,247 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 1 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:47,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:47,547 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 1 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:47,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784138573] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:47,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [546243056] [2022-11-19 06:52:47,550 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 06:52:47,551 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:52:47,551 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:52:47,551 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:52:47,552 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:52:47,690 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:52:48,400 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4081#(and (< (+ 2147483647 |ULTIMATE.start_main_~z~0#1|) 0) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2022-11-19 06:52:48,400 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:52:48,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:52:48,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-19 06:52:48,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439973148] [2022-11-19 06:52:48,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:52:48,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 06:52:48,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:48,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 06:52:48,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=713, Unknown=0, NotChecked=0, Total=1122 [2022-11-19 06:52:48,403 INFO L87 Difference]: Start difference. First operand 173 states and 195 transitions. Second operand has 24 states, 23 states have (on average 5.478260869565218) internal successors, (126), 23 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:48,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:48,533 INFO L93 Difference]: Finished difference Result 234 states and 267 transitions. [2022-11-19 06:52:48,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 06:52:48,534 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.478260869565218) internal successors, (126), 23 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-19 06:52:48,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:48,539 INFO L225 Difference]: With dead ends: 234 [2022-11-19 06:52:48,539 INFO L226 Difference]: Without dead ends: 233 [2022-11-19 06:52:48,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 156 SyntacticMatches, 11 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=409, Invalid=713, Unknown=0, NotChecked=0, Total=1122 [2022-11-19 06:52:48,542 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:48,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 81 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:52:48,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-11-19 06:52:48,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2022-11-19 06:52:48,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 231 states have (on average 1.103896103896104) internal successors, (255), 232 states have internal predecessors, (255), 0 states have call successors, (0), 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 06:52:48,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 255 transitions. [2022-11-19 06:52:48,585 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 255 transitions. Word has length 63 [2022-11-19 06:52:48,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:48,586 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 255 transitions. [2022-11-19 06:52:48,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.478260869565218) internal successors, (126), 23 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:48,586 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 255 transitions. [2022-11-19 06:52:48,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-19 06:52:48,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:48,592 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1] [2022-11-19 06:52:48,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:48,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:48,798 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:52:48,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:48,799 INFO L85 PathProgramCache]: Analyzing trace with hash -263820492, now seen corresponding path program 4 times [2022-11-19 06:52:48,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:48,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841000053] [2022-11-19 06:52:48,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:48,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:49,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:49,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:49,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841000053] [2022-11-19 06:52:49,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841000053] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:52:49,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632004732] [2022-11-19 06:52:49,443 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 06:52:49,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:49,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:49,447 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:52:49,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 06:52:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:49,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-19 06:52:49,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:49,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:49,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:50,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:50,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632004732] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:50,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1164815905] [2022-11-19 06:52:50,702 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 06:52:50,703 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:52:50,703 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:52:50,703 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:52:50,703 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:52:50,778 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:52:51,914 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5388#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483645) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 0 (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2022-11-19 06:52:51,914 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:52:51,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:52:51,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-11-19 06:52:51,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251731880] [2022-11-19 06:52:51,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:52:51,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-19 06:52:51,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:51,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-19 06:52:51,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1191, Invalid=1671, Unknown=0, NotChecked=0, Total=2862 [2022-11-19 06:52:51,918 INFO L87 Difference]: Start difference. First operand 233 states and 255 transitions. Second operand has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 47 states have internal predecessors, (232), 0 states have call successors, (0), 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 06:52:52,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:52,932 INFO L93 Difference]: Finished difference Result 3109 states and 3180 transitions. [2022-11-19 06:52:52,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-19 06:52:52,932 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 47 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2022-11-19 06:52:52,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:52,943 INFO L225 Difference]: With dead ends: 3109 [2022-11-19 06:52:52,943 INFO L226 Difference]: Without dead ends: 3108 [2022-11-19 06:52:52,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 294 SyntacticMatches, 23 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2063 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1191, Invalid=1671, Unknown=0, NotChecked=0, Total=2862 [2022-11-19 06:52:52,947 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 737 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:52,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 287 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 06:52:52,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2022-11-19 06:52:53,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 353. [2022-11-19 06:52:53,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 351 states have (on average 1.1367521367521367) internal successors, (399), 352 states have internal predecessors, (399), 0 states have call successors, (0), 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 06:52:53,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 399 transitions. [2022-11-19 06:52:53,005 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 399 transitions. Word has length 116 [2022-11-19 06:52:53,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:53,006 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 399 transitions. [2022-11-19 06:52:53,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 47 states have internal predecessors, (232), 0 states have call successors, (0), 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 06:52:53,006 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 399 transitions. [2022-11-19 06:52:53,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-19 06:52:53,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:53,008 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:53,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:53,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:53,214 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:52:53,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:53,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1603983923, now seen corresponding path program 4 times [2022-11-19 06:52:53,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:53,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676722796] [2022-11-19 06:52:53,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:53,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:54,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 1 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:54,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:54,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676722796] [2022-11-19 06:52:54,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676722796] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:52:54,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669981957] [2022-11-19 06:52:54,030 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 06:52:54,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:54,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:54,032 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:52:54,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-19 06:52:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:54,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-19 06:52:54,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 1 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:54,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:55,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 1 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:55,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669981957] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:55,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1982066226] [2022-11-19 06:52:55,372 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 06:52:55,372 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:52:55,372 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:52:55,373 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:52:55,373 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:52:55,511 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:52:56,810 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10327#(and (< (+ 2147483647 |ULTIMATE.start_main_~z~0#1|) 0) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2022-11-19 06:52:56,810 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:52:56,810 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:52:56,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-11-19 06:52:56,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231533210] [2022-11-19 06:52:56,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:52:56,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-19 06:52:56,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:56,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-19 06:52:56,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1381, Invalid=1925, Unknown=0, NotChecked=0, Total=3306 [2022-11-19 06:52:56,813 INFO L87 Difference]: Start difference. First operand 353 states and 399 transitions. Second operand has 48 states, 47 states have (on average 5.23404255319149) internal successors, (246), 47 states have internal predecessors, (246), 0 states have call successors, (0), 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 06:52:57,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:57,046 INFO L93 Difference]: Finished difference Result 474 states and 543 transitions. [2022-11-19 06:52:57,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-19 06:52:57,047 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.23404255319149) internal successors, (246), 47 states have internal predecessors, (246), 0 states have call successors, (0), 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 123 [2022-11-19 06:52:57,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:57,049 INFO L225 Difference]: With dead ends: 474 [2022-11-19 06:52:57,049 INFO L226 Difference]: Without dead ends: 473 [2022-11-19 06:52:57,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 312 SyntacticMatches, 23 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2588 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1381, Invalid=1925, Unknown=0, NotChecked=0, Total=3306 [2022-11-19 06:52:57,051 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 30 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:57,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 153 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:52:57,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-11-19 06:52:57,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2022-11-19 06:52:57,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 471 states have (on average 1.1019108280254777) internal successors, (519), 472 states have internal predecessors, (519), 0 states have call successors, (0), 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 06:52:57,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 519 transitions. [2022-11-19 06:52:57,103 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 519 transitions. Word has length 123 [2022-11-19 06:52:57,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:57,104 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 519 transitions. [2022-11-19 06:52:57,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.23404255319149) internal successors, (246), 47 states have internal predecessors, (246), 0 states have call successors, (0), 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 06:52:57,104 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 519 transitions. [2022-11-19 06:52:57,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-19 06:52:57,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:57,107 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1] [2022-11-19 06:52:57,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:57,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-19 06:52:57,318 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:52:57,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:57,318 INFO L85 PathProgramCache]: Analyzing trace with hash -697547980, now seen corresponding path program 5 times [2022-11-19 06:52:57,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:57,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736387487] [2022-11-19 06:52:57,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:57,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:59,410 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:59,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:59,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736387487] [2022-11-19 06:52:59,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736387487] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:52:59,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525977069] [2022-11-19 06:52:59,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:52:59,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:59,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:59,412 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:52:59,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 06:52:59,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-19 06:52:59,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:52:59,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-19 06:52:59,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:59,914 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:59,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:53:03,141 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:53:03,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525977069] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:53:03,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1480225026] [2022-11-19 06:53:03,143 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 06:53:03,143 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:53:03,143 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:53:03,143 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:53:03,143 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:53:03,205 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:53:06,220 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12978#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483645) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 0 (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2022-11-19 06:53:06,220 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:53:06,223 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:53:06,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-11-19 06:53:06,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377511974] [2022-11-19 06:53:06,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:53:06,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-19 06:53:06,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:53:06,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-19 06:53:06,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4671, Invalid=5631, Unknown=0, NotChecked=0, Total=10302 [2022-11-19 06:53:06,229 INFO L87 Difference]: Start difference. First operand 473 states and 519 transitions. Second operand has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 95 states have internal predecessors, (472), 0 states have call successors, (0), 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 06:53:10,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:53:10,970 INFO L93 Difference]: Finished difference Result 11989 states and 12132 transitions. [2022-11-19 06:53:10,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-19 06:53:10,971 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 95 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 236 [2022-11-19 06:53:10,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:53:11,008 INFO L225 Difference]: With dead ends: 11989 [2022-11-19 06:53:11,008 INFO L226 Difference]: Without dead ends: 11988 [2022-11-19 06:53:11,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 606 SyntacticMatches, 47 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7607 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=4671, Invalid=5631, Unknown=0, NotChecked=0, Total=10302 [2022-11-19 06:53:11,017 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 1909 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1909 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:53:11,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1909 Valid, 575 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 06:53:11,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11988 states. [2022-11-19 06:53:11,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11988 to 713. [2022-11-19 06:53:11,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 711 states have (on average 1.1350210970464134) internal successors, (807), 712 states have internal predecessors, (807), 0 states have call successors, (0), 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 06:53:11,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 807 transitions. [2022-11-19 06:53:11,211 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 807 transitions. Word has length 236 [2022-11-19 06:53:11,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:53:11,212 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 807 transitions. [2022-11-19 06:53:11,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 95 states have internal predecessors, (472), 0 states have call successors, (0), 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 06:53:11,212 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 807 transitions. [2022-11-19 06:53:11,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-11-19 06:53:11,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:53:11,217 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:53:11,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 06:53:11,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-19 06:53:11,423 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:53:11,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:53:11,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1337375053, now seen corresponding path program 5 times [2022-11-19 06:53:11,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:53:11,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746852081] [2022-11-19 06:53:11,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:11,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:53:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:13,765 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 1 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:53:13,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:53:13,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746852081] [2022-11-19 06:53:13,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746852081] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:53:13,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762517533] [2022-11-19 06:53:13,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:53:13,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:53:13,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:53:13,768 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:53:13,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-19 06:53:13,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-19 06:53:13,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:53:13,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-19 06:53:13,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:53:14,349 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 1 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:53:14,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:53:17,511 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 1 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:53:17,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762517533] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:53:17,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1652910676] [2022-11-19 06:53:17,512 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 06:53:17,512 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:53:17,513 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:53:17,513 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:53:17,513 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:53:17,627 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:53:20,830 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '29773#(and (< (+ 2147483647 |ULTIMATE.start_main_~z~0#1|) 0) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2022-11-19 06:53:20,831 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:53:20,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:53:20,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-11-19 06:53:20,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897236980] [2022-11-19 06:53:20,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:53:20,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-19 06:53:20,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:53:20,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-19 06:53:20,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5053, Invalid=6077, Unknown=0, NotChecked=0, Total=11130 [2022-11-19 06:53:20,837 INFO L87 Difference]: Start difference. First operand 713 states and 807 transitions. Second operand has 96 states, 95 states have (on average 5.11578947368421) internal successors, (486), 95 states have internal predecessors, (486), 0 states have call successors, (0), 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 06:53:21,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:53:21,418 INFO L93 Difference]: Finished difference Result 954 states and 1095 transitions. [2022-11-19 06:53:21,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-19 06:53:21,419 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 5.11578947368421) internal successors, (486), 95 states have internal predecessors, (486), 0 states have call successors, (0), 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 243 [2022-11-19 06:53:21,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:53:21,421 INFO L225 Difference]: With dead ends: 954 [2022-11-19 06:53:21,422 INFO L226 Difference]: Without dead ends: 953 [2022-11-19 06:53:21,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 624 SyntacticMatches, 47 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8684 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=5053, Invalid=6077, Unknown=0, NotChecked=0, Total=11130 [2022-11-19 06:53:21,425 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 60 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:53:21,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 297 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:53:21,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2022-11-19 06:53:21,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 953. [2022-11-19 06:53:21,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 951 states have (on average 1.1009463722397477) internal successors, (1047), 952 states have internal predecessors, (1047), 0 states have call successors, (0), 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 06:53:21,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1047 transitions. [2022-11-19 06:53:21,521 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1047 transitions. Word has length 243 [2022-11-19 06:53:21,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:53:21,521 INFO L495 AbstractCegarLoop]: Abstraction has 953 states and 1047 transitions. [2022-11-19 06:53:21,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 5.11578947368421) internal successors, (486), 95 states have internal predecessors, (486), 0 states have call successors, (0), 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 06:53:21,521 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1047 transitions. [2022-11-19 06:53:21,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2022-11-19 06:53:21,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:53:21,531 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 94, 94, 1, 1, 1] [2022-11-19 06:53:21,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-19 06:53:21,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:53:21,737 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:53:21,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:53:21,738 INFO L85 PathProgramCache]: Analyzing trace with hash -2009074892, now seen corresponding path program 6 times [2022-11-19 06:53:21,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:53:21,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340000631] [2022-11-19 06:53:21,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:21,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:53:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:29,523 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:53:29,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:53:29,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340000631] [2022-11-19 06:53:29,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340000631] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:53:29,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120379021] [2022-11-19 06:53:29,524 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:53:29,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:53:29,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:53:29,525 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:53:29,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-19 06:53:29,703 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:53:29,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:53:29,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-19 06:53:29,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:53:30,389 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:53:30,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:53:41,985 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:53:41,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120379021] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:53:41,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [792397017] [2022-11-19 06:53:41,988 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 06:53:41,988 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:53:41,988 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:53:41,988 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:53:41,989 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:53:42,059 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:53:51,983 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '35112#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483645) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 0 (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2022-11-19 06:53:51,984 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:53:51,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:53:51,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2022-11-19 06:53:51,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281885131] [2022-11-19 06:53:51,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:53:51,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-19 06:53:51,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:53:51,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-19 06:53:51,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18543, Invalid=20463, Unknown=0, NotChecked=0, Total=39006 [2022-11-19 06:53:51,996 INFO L87 Difference]: Start difference. First operand 953 states and 1047 transitions. Second operand has 192 states, 191 states have (on average 4.984293193717278) internal successors, (952), 191 states have internal predecessors, (952), 0 states have call successors, (0), 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 06:54:25,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:54:25,026 INFO L93 Difference]: Finished difference Result 47029 states and 47316 transitions. [2022-11-19 06:54:25,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-19 06:54:25,028 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.984293193717278) internal successors, (952), 191 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 476 [2022-11-19 06:54:25,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:54:25,129 INFO L225 Difference]: With dead ends: 47029 [2022-11-19 06:54:25,129 INFO L226 Difference]: Without dead ends: 47028 [2022-11-19 06:54:25,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1521 GetRequests, 1230 SyntacticMatches, 95 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29063 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=18543, Invalid=20463, Unknown=0, NotChecked=0, Total=39006 [2022-11-19 06:54:25,155 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 4740 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 1021 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4740 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1021 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:54:25,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4740 Valid, 1151 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1021 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-19 06:54:25,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47028 states. [2022-11-19 06:54:25,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47028 to 1433. [2022-11-19 06:54:25,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1431 states have (on average 1.1341719077568133) internal successors, (1623), 1432 states have internal predecessors, (1623), 0 states have call successors, (0), 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 06:54:25,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1623 transitions. [2022-11-19 06:54:25,763 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1623 transitions. Word has length 476 [2022-11-19 06:54:25,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:54:25,764 INFO L495 AbstractCegarLoop]: Abstraction has 1433 states and 1623 transitions. [2022-11-19 06:54:25,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.984293193717278) internal successors, (952), 191 states have internal predecessors, (952), 0 states have call successors, (0), 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 06:54:25,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1623 transitions. [2022-11-19 06:54:25,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2022-11-19 06:54:25,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:54:25,776 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:54:25,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-19 06:54:25,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-19 06:54:25,982 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:54:25,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:54:25,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1465147469, now seen corresponding path program 6 times [2022-11-19 06:54:25,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:54:25,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251137385] [2022-11-19 06:54:25,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:54:25,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:54:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:54:33,530 INFO L134 CoverageAnalysis]: Checked inductivity of 22326 backedges. 1 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:54:33,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:54:33,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251137385] [2022-11-19 06:54:33,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251137385] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:54:33,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140700343] [2022-11-19 06:54:33,531 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:54:33,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:54:33,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:54:33,541 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:54:33,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-19 06:54:33,722 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:54:33,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:54:33,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-19 06:54:33,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:54:34,453 INFO L134 CoverageAnalysis]: Checked inductivity of 22326 backedges. 1 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:54:34,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:54:46,313 INFO L134 CoverageAnalysis]: Checked inductivity of 22326 backedges. 1 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:54:46,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140700343] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:54:46,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [755632309] [2022-11-19 06:54:46,315 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 06:54:46,315 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:54:46,315 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:54:46,316 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:54:46,316 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:54:46,418 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:54:56,941 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '96355#(and (< (+ 2147483647 |ULTIMATE.start_main_~z~0#1|) 0) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2022-11-19 06:54:56,941 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:54:56,941 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:54:56,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2022-11-19 06:54:56,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212571603] [2022-11-19 06:54:56,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:54:56,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-19 06:54:56,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:54:56,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-19 06:54:56,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19309, Invalid=21293, Unknown=0, NotChecked=0, Total=40602 [2022-11-19 06:54:56,951 INFO L87 Difference]: Start difference. First operand 1433 states and 1623 transitions. Second operand has 192 states, 191 states have (on average 5.057591623036649) internal successors, (966), 191 states have internal predecessors, (966), 0 states have call successors, (0), 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 06:54:58,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:54:58,764 INFO L93 Difference]: Finished difference Result 1914 states and 2199 transitions. [2022-11-19 06:54:58,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-19 06:54:58,765 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 5.057591623036649) internal successors, (966), 191 states have internal predecessors, (966), 0 states have call successors, (0), 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 483 [2022-11-19 06:54:58,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:54:58,770 INFO L225 Difference]: With dead ends: 1914 [2022-11-19 06:54:58,770 INFO L226 Difference]: Without dead ends: 1913 [2022-11-19 06:54:58,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1543 GetRequests, 1248 SyntacticMatches, 95 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31244 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=19309, Invalid=21293, Unknown=0, NotChecked=0, Total=40602 [2022-11-19 06:54:58,775 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 54 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:54:58,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 585 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 06:54:58,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2022-11-19 06:54:59,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1913. [2022-11-19 06:54:59,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1913 states, 1911 states have (on average 1.1004709576138147) internal successors, (2103), 1912 states have internal predecessors, (2103), 0 states have call successors, (0), 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 06:54:59,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 2103 transitions. [2022-11-19 06:54:59,205 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 2103 transitions. Word has length 483 [2022-11-19 06:54:59,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:54:59,206 INFO L495 AbstractCegarLoop]: Abstraction has 1913 states and 2103 transitions. [2022-11-19 06:54:59,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 5.057591623036649) internal successors, (966), 191 states have internal predecessors, (966), 0 states have call successors, (0), 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 06:54:59,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 2103 transitions. [2022-11-19 06:54:59,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2022-11-19 06:54:59,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:54:59,219 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 190, 190, 1, 1, 1] [2022-11-19 06:54:59,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-19 06:54:59,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:54:59,426 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:54:59,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:54:59,427 INFO L85 PathProgramCache]: Analyzing trace with hash 570905396, now seen corresponding path program 7 times [2022-11-19 06:54:59,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:54:59,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351466456] [2022-11-19 06:54:59,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:54:59,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:54:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:55:30,777 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:55:30,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:55:30,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351466456] [2022-11-19 06:55:30,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351466456] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:55:30,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412217784] [2022-11-19 06:55:30,778 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 06:55:30,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:55:30,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:55:30,780 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:55:30,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-19 06:55:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:55:31,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 192 conjunts are in the unsatisfiable core [2022-11-19 06:55:31,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:55:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:55:32,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:56:17,641 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:56:17,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412217784] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:56:17,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1095598662] [2022-11-19 06:56:17,643 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 06:56:17,644 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:56:17,644 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:56:17,644 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:56:17,644 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:56:17,708 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:56:53,919 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '107070#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483645) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 0 (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2022-11-19 06:56:53,919 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:56:53,919 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:56:53,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2022-11-19 06:56:53,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201525201] [2022-11-19 06:56:53,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:56:53,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-11-19 06:56:53,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:53,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-11-19 06:56:53,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73935, Invalid=77775, Unknown=0, NotChecked=0, Total=151710 [2022-11-19 06:56:53,941 INFO L87 Difference]: Start difference. First operand 1913 states and 2103 transitions. Second operand has 384 states, 383 states have (on average 4.992167101827676) internal successors, (1912), 383 states have internal predecessors, (1912), 0 states have call successors, (0), 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 07:04:02,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:02,654 INFO L93 Difference]: Finished difference Result 186229 states and 186804 transitions. [2022-11-19 07:04:02,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-11-19 07:04:02,656 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 4.992167101827676) internal successors, (1912), 383 states have internal predecessors, (1912), 0 states have call successors, (0), 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 956 [2022-11-19 07:04:02,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:02,875 INFO L225 Difference]: With dead ends: 186229 [2022-11-19 07:04:02,875 INFO L226 Difference]: Without dead ends: 186228 [2022-11-19 07:04:02,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3057 GetRequests, 2478 SyntacticMatches, 191 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113447 ImplicationChecksByTransitivity, 94.6s TimeCoverageRelationStatistics Valid=73935, Invalid=77775, Unknown=0, NotChecked=0, Total=151710 [2022-11-19 07:04:02,931 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 11927 mSDsluCounter, 2292 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 2529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11927 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 4451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2529 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:02,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11927 Valid, 2303 Invalid, 4451 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2529 Valid, 1922 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-19 07:04:03,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186228 states. [2022-11-19 07:04:05,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186228 to 2873. [2022-11-19 07:04:05,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2871 states have (on average 1.1337513061650992) internal successors, (3255), 2872 states have internal predecessors, (3255), 0 states have call successors, (0), 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 07:04:05,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3255 transitions. [2022-11-19 07:04:05,235 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3255 transitions. Word has length 956 [2022-11-19 07:04:05,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:05,237 INFO L495 AbstractCegarLoop]: Abstraction has 2873 states and 3255 transitions. [2022-11-19 07:04:05,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 4.992167101827676) internal successors, (1912), 383 states have internal predecessors, (1912), 0 states have call successors, (0), 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 07:04:05,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3255 transitions. [2022-11-19 07:04:05,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2022-11-19 07:04:05,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:05,248 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 191, 190, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:04:05,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-19 07:04:05,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:04:05,455 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 07:04:05,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:05,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1401311667, now seen corresponding path program 7 times [2022-11-19 07:04:05,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:05,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077094222] [2022-11-19 07:04:05,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:05,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:37,509 INFO L134 CoverageAnalysis]: Checked inductivity of 90726 backedges. 1 proven. 90725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:37,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:37,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077094222] [2022-11-19 07:04:37,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077094222] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:04:37,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308388633] [2022-11-19 07:04:37,510 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 07:04:37,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:04:37,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:04:37,512 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:04:37,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-19 07:04:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:37,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 193 conjunts are in the unsatisfiable core [2022-11-19 07:04:37,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:04:39,218 INFO L134 CoverageAnalysis]: Checked inductivity of 90726 backedges. 1 proven. 90725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:39,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:05:25,499 INFO L134 CoverageAnalysis]: Checked inductivity of 90726 backedges. 1 proven. 90725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:05:25,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308388633] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:05:25,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [796703798] [2022-11-19 07:05:25,502 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 07:05:25,502 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:05:25,503 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:05:25,503 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:05:25,503 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:05:25,594 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:06:03,193 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '340153#(and (< (+ 2147483647 |ULTIMATE.start_main_~z~0#1|) 0) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2022-11-19 07:06:03,193 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:06:03,193 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:06:03,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2022-11-19 07:06:03,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372283260] [2022-11-19 07:06:03,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:06:03,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-11-19 07:06:03,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:06:03,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-11-19 07:06:03,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75469, Invalid=79373, Unknown=0, NotChecked=0, Total=154842 [2022-11-19 07:06:03,213 INFO L87 Difference]: Start difference. First operand 2873 states and 3255 transitions. Second operand has 384 states, 383 states have (on average 5.028720626631854) internal successors, (1926), 383 states have internal predecessors, (1926), 0 states have call successors, (0), 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 07:06:12,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:12,674 INFO L93 Difference]: Finished difference Result 3834 states and 4407 transitions. [2022-11-19 07:06:12,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-11-19 07:06:12,675 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 5.028720626631854) internal successors, (1926), 383 states have internal predecessors, (1926), 0 states have call successors, (0), 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 963 [2022-11-19 07:06:12,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:12,681 INFO L225 Difference]: With dead ends: 3834 [2022-11-19 07:06:12,681 INFO L226 Difference]: Without dead ends: 3833 [2022-11-19 07:06:12,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3079 GetRequests, 2496 SyntacticMatches, 191 SemanticMatches, 392 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117836 ImplicationChecksByTransitivity, 97.4s TimeCoverageRelationStatistics Valid=75469, Invalid=79373, Unknown=0, NotChecked=0, Total=154842 [2022-11-19 07:06:12,694 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 56 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:12,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1161 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-19 07:06:12,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2022-11-19 07:06:13,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 3833. [2022-11-19 07:06:13,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 3831 states have (on average 1.100234925606891) internal successors, (4215), 3832 states have internal predecessors, (4215), 0 states have call successors, (0), 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 07:06:13,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 4215 transitions. [2022-11-19 07:06:13,822 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 4215 transitions. Word has length 963 [2022-11-19 07:06:13,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:13,823 INFO L495 AbstractCegarLoop]: Abstraction has 3833 states and 4215 transitions. [2022-11-19 07:06:13,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 5.028720626631854) internal successors, (1926), 383 states have internal predecessors, (1926), 0 states have call successors, (0), 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 07:06:13,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 4215 transitions. [2022-11-19 07:06:13,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1917 [2022-11-19 07:06:13,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:13,855 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 383, 382, 382, 1, 1, 1] [2022-11-19 07:06:13,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:14,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eaac69f-a536-4689-bc24-0a91b4a66208/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-19 07:06:14,063 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 07:06:14,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:14,064 INFO L85 PathProgramCache]: Analyzing trace with hash 773198644, now seen corresponding path program 8 times [2022-11-19 07:06:14,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:06:14,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98273686] [2022-11-19 07:06:14,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:14,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:06:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat