./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Singapore-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/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_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Singapore-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/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_d36f5d49-59d6-48e4-b65f-8298403bb3cf/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 14352272474fcd72367ebff6d0f1f20f37763259fc59dc19b61cd8b29efae381 --- 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 07:14:17,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:14:17,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:14:17,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:14:17,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:14:17,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:14:17,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:14:17,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:14:17,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:14:17,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:14:17,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:14:17,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:14:17,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:14:17,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:14:17,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:14:17,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:14:17,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:14:17,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:14:17,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:14:17,381 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:14:17,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:14:17,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:14:17,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:14:17,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:14:17,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:14:17,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:14:17,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:14:17,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:14:17,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:14:17,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:14:17,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:14:17,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:14:17,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:14:17,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:14:17,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:14:17,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:14:17,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:14:17,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:14:17,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:14:17,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:14:17,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:14:17,409 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-19 07:14:17,432 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:14:17,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:14:17,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:14:17,434 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:14:17,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:14:17,435 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:14:17,435 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:14:17,435 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:14:17,436 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:14:17,436 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:14:17,436 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:14:17,436 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:14:17,437 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:14:17,437 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:14:17,437 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:14:17,438 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:14:17,438 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:14:17,438 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:14:17,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:14:17,439 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:14:17,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:14:17,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:14:17,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:14:17,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:14:17,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:14:17,441 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 07:14:17,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:14:17,442 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:14:17,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:14:17,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:14:17,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:14:17,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:14:17,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:14:17,444 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:14:17,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:14:17,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:14:17,445 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:14:17,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:14:17,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:14:17,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:14:17,446 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_d36f5d49-59d6-48e4-b65f-8298403bb3cf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14352272474fcd72367ebff6d0f1f20f37763259fc59dc19b61cd8b29efae381 [2022-11-19 07:14:17,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:14:17,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:14:17,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:14:17,756 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:14:17,766 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:14:17,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/termination-crafted/Singapore-2.c [2022-11-19 07:14:17,860 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/data/91d26199c/286358533d1842e7bdf664fa6bcdde97/FLAG60d7b7aeb [2022-11-19 07:14:18,421 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:14:18,422 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/sv-benchmarks/c/termination-crafted/Singapore-2.c [2022-11-19 07:14:18,430 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/data/91d26199c/286358533d1842e7bdf664fa6bcdde97/FLAG60d7b7aeb [2022-11-19 07:14:18,823 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/data/91d26199c/286358533d1842e7bdf664fa6bcdde97 [2022-11-19 07:14:18,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:14:18,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:14:18,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:14:18,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:14:18,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:14:18,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:14:18" (1/1) ... [2022-11-19 07:14:18,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c34878b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:18, skipping insertion in model container [2022-11-19 07:14:18,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:14:18" (1/1) ... [2022-11-19 07:14:18,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:14:18,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:14:19,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:14:19,134 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:14:19,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:14:19,166 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:14:19,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:19 WrapperNode [2022-11-19 07:14:19,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:14:19,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:14:19,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:14:19,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:14:19,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:19" (1/1) ... [2022-11-19 07:14:19,182 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:19" (1/1) ... [2022-11-19 07:14:19,205 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 33 [2022-11-19 07:14:19,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:14:19,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:14:19,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:14:19,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:14:19,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:19" (1/1) ... [2022-11-19 07:14:19,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:19" (1/1) ... [2022-11-19 07:14:19,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:19" (1/1) ... [2022-11-19 07:14:19,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:19" (1/1) ... [2022-11-19 07:14:19,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:19" (1/1) ... [2022-11-19 07:14:19,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:19" (1/1) ... [2022-11-19 07:14:19,232 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:19" (1/1) ... [2022-11-19 07:14:19,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:19" (1/1) ... [2022-11-19 07:14:19,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:14:19,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:14:19,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:14:19,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:14:19,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:19" (1/1) ... [2022-11-19 07:14:19,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:14:19,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:14:19,280 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:14:19,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:14:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:14:19,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:14:19,410 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:14:19,412 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:14:19,573 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:14:19,599 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:14:19,599 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:14:19,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:14:19 BoogieIcfgContainer [2022-11-19 07:14:19,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:14:19,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:14:19,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:14:19,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:14:19,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:14:18" (1/3) ... [2022-11-19 07:14:19,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe69fcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:14:19, skipping insertion in model container [2022-11-19 07:14:19,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:19" (2/3) ... [2022-11-19 07:14:19,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe69fcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:14:19, skipping insertion in model container [2022-11-19 07:14:19,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:14:19" (3/3) ... [2022-11-19 07:14:19,616 INFO L112 eAbstractionObserver]: Analyzing ICFG Singapore-2.c [2022-11-19 07:14:19,636 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:14:19,637 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-19 07:14:19,696 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:14:19,702 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;@2202e6be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:14:19,703 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-19 07:14:19,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.8) internal successors, (27), 23 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 07:14:19,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 07:14:19,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:14:19,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 07:14:19,715 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 07:14:19,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:14:19,720 INFO L85 PathProgramCache]: Analyzing trace with hash 2449974, now seen corresponding path program 1 times [2022-11-19 07:14:19,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:14:19,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472047475] [2022-11-19 07:14:19,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:19,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:14:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:19,977 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 07:14:19,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:14:19,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472047475] [2022-11-19 07:14:19,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472047475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:14:19,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:14:19,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:14:19,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131404614] [2022-11-19 07:14:19,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:14:19,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:14:19,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:14:20,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:14:20,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:14:20,025 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.8) internal successors, (27), 23 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) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:14:20,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:14:20,234 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2022-11-19 07:14:20,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:14:20,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-19 07:14:20,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:14:20,245 INFO L225 Difference]: With dead ends: 38 [2022-11-19 07:14:20,245 INFO L226 Difference]: Without dead ends: 27 [2022-11-19 07:14:20,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:14:20,251 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 31 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:14:20,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 16 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:14:20,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-19 07:14:20,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2022-11-19 07:14:20,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:14:20,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-11-19 07:14:20,286 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 4 [2022-11-19 07:14:20,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:14:20,287 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-11-19 07:14:20,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:14:20,288 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-11-19 07:14:20,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:14:20,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:14:20,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:14:20,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:14:20,290 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 07:14:20,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:14:20,291 INFO L85 PathProgramCache]: Analyzing trace with hash 75949240, now seen corresponding path program 1 times [2022-11-19 07:14:20,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:14:20,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20357414] [2022-11-19 07:14:20,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:20,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:14:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:20,385 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 07:14:20,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:14:20,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20357414] [2022-11-19 07:14:20,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20357414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:14:20,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:14:20,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:14:20,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974721809] [2022-11-19 07:14:20,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:14:20,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:14:20,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:14:20,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:14:20,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:14:20,389 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:14:20,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:14:20,488 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2022-11-19 07:14:20,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:14:20,489 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 07:14:20,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:14:20,490 INFO L225 Difference]: With dead ends: 26 [2022-11-19 07:14:20,490 INFO L226 Difference]: Without dead ends: 23 [2022-11-19 07:14:20,491 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 07:14:20,493 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 20 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:14:20,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 10 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:14:20,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-19 07:14:20,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-19 07:14:20,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 22 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 07:14:20,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-11-19 07:14:20,504 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 5 [2022-11-19 07:14:20,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:14:20,505 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-11-19 07:14:20,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:14:20,505 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-11-19 07:14:20,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 07:14:20,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:14:20,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:14:20,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:14:20,507 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 07:14:20,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:14:20,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1258425985, now seen corresponding path program 1 times [2022-11-19 07:14:20,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:14:20,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801956835] [2022-11-19 07:14:20,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:20,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:14:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:20,626 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 07:14:20,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:14:20,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801956835] [2022-11-19 07:14:20,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801956835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:14:20,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:14:20,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:14:20,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424188075] [2022-11-19 07:14:20,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:14:20,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:14:20,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:14:20,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:14:20,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:14:20,632 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:14:20,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:14:20,674 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2022-11-19 07:14:20,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:14:20,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-19 07:14:20,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:14:20,676 INFO L225 Difference]: With dead ends: 23 [2022-11-19 07:14:20,677 INFO L226 Difference]: Without dead ends: 22 [2022-11-19 07:14:20,677 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 07:14:20,678 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:14:20,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 5 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:14:20,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-19 07:14:20,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-19 07:14:20,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 21 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 07:14:20,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-11-19 07:14:20,684 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 12 [2022-11-19 07:14:20,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:14:20,684 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-11-19 07:14:20,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:14:20,685 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-11-19 07:14:20,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 07:14:20,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:14:20,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:14:20,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:14:20,686 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 07:14:20,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:14:20,687 INFO L85 PathProgramCache]: Analyzing trace with hash -356499801, now seen corresponding path program 1 times [2022-11-19 07:14:20,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:14:20,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366191412] [2022-11-19 07:14:20,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:20,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:14:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:20,761 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 07:14:20,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:14:20,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366191412] [2022-11-19 07:14:20,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366191412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:14:20,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:14:20,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:14:20,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398260923] [2022-11-19 07:14:20,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:14:20,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:14:20,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:14:20,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:14:20,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:14:20,764 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:14:20,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:14:20,789 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2022-11-19 07:14:20,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:14:20,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-19 07:14:20,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:14:20,790 INFO L225 Difference]: With dead ends: 25 [2022-11-19 07:14:20,791 INFO L226 Difference]: Without dead ends: 24 [2022-11-19 07:14:20,791 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 07:14:20,792 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:14:20,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:14:20,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-19 07:14:20,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-19 07:14:20,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.2) internal successors, (24), 23 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 07:14:20,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-11-19 07:14:20,798 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 13 [2022-11-19 07:14:20,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:14:20,799 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-11-19 07:14:20,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:14:20,799 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-11-19 07:14:20,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 07:14:20,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:14:20,800 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:14:20,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:14:20,801 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 07:14:20,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:14:20,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1001076777, now seen corresponding path program 1 times [2022-11-19 07:14:20,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:14:20,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918450276] [2022-11-19 07:14:20,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:20,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:14:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:14:20,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:14:20,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918450276] [2022-11-19 07:14:20,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918450276] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:14:20,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291134677] [2022-11-19 07:14:20,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:20,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:14:20,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:14:20,878 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:14:20,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:14:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:20,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:14:20,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:14:21,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:14:21,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:14:21,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:14:21,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291134677] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:14:21,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [887921881] [2022-11-19 07:14:21,216 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-19 07:14:21,216 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:14:21,220 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:14:21,226 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:14:21,226 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:14:21,665 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:14:22,283 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '361#(and (= (mod (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1| 1) 2) 0) (<= (+ |ULTIMATE.start_main_~y~0#1| (* (div (+ |ULTIMATE.start_main_~y~0#1| (* (- 1) |ULTIMATE.start_main_~x~0#1|) 1) (- 2)) 2)) 2147483646) (not (<= (* 2 |ULTIMATE.start_main_~x~0#1|) 2147483647)) (<= |ULTIMATE.start_main_~y~0#1| 65533) (<= (div (+ |ULTIMATE.start_main_~y~0#1| (* (- 1) |ULTIMATE.start_main_~x~0#1|) 1) (- 2)) 1073741823))' at error location [2022-11-19 07:14:22,283 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:14:22,284 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:14:22,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2022-11-19 07:14:22,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277802680] [2022-11-19 07:14:22,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:14:22,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:14:22,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:14:22,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:14:22,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-11-19 07:14:22,286 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 8 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 07:14:22,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:14:22,352 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-11-19 07:14:22,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:14:22,359 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 8 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) Word has length 15 [2022-11-19 07:14:22,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:14:22,360 INFO L225 Difference]: With dead ends: 24 [2022-11-19 07:14:22,361 INFO L226 Difference]: Without dead ends: 22 [2022-11-19 07:14:22,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-11-19 07:14:22,365 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:14:22,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:14:22,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-19 07:14:22,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-19 07:14:22,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.1) internal successors, (22), 21 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 07:14:22,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-11-19 07:14:22,377 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2022-11-19 07:14:22,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:14:22,378 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-11-19 07:14:22,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 8 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 07:14:22,378 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-11-19 07:14:22,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 07:14:22,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:14:22,379 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:14:22,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:14:22,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:14:22,585 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 07:14:22,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:14:22,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1174578185, now seen corresponding path program 1 times [2022-11-19 07:14:22,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:14:22,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358723875] [2022-11-19 07:14:22,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:22,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:14:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:14:22,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:14:22,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358723875] [2022-11-19 07:14:22,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358723875] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:14:22,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048014639] [2022-11-19 07:14:22,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:22,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:14:22,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:14:22,690 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:14:22,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:14:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:22,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:14:22,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:14:22,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:14:22,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:14:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:14:22,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048014639] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:14:22,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [914852559] [2022-11-19 07:14:22,861 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-19 07:14:22,861 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:14:22,861 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:14:22,862 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:14:22,862 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:14:23,054 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:14:23,529 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '533#(and (<= |ULTIMATE.start_main_~x~0#1| 1073741823) (<= 0 |ULTIMATE.start_main_~x~0#1|) (< (+ (* 2 |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~y~0#1| 2147483648) 0))' at error location [2022-11-19 07:14:23,530 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:14:23,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:14:23,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-11-19 07:14:23,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892407945] [2022-11-19 07:14:23,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:14:23,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:14:23,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:14:23,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:14:23,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-11-19 07:14:23,532 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:14:23,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:14:23,646 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2022-11-19 07:14:23,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 07:14:23,647 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-19 07:14:23,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:14:23,648 INFO L225 Difference]: With dead ends: 30 [2022-11-19 07:14:23,648 INFO L226 Difference]: Without dead ends: 28 [2022-11-19 07:14:23,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-11-19 07:14:23,649 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 27 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:14:23,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:14:23,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-19 07:14:23,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-19 07:14:23,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:14:23,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2022-11-19 07:14:23,654 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 18 [2022-11-19 07:14:23,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:14:23,654 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2022-11-19 07:14:23,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:14:23,654 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2022-11-19 07:14:23,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:14:23,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:14:23,655 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:14:23,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:14:23,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:14:23,856 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 07:14:23,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:14:23,857 INFO L85 PathProgramCache]: Analyzing trace with hash 814278247, now seen corresponding path program 1 times [2022-11-19 07:14:23,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:14:23,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131180057] [2022-11-19 07:14:23,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:23,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:14:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:23,919 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:14:23,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:14:23,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131180057] [2022-11-19 07:14:23,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131180057] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:14:23,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275082016] [2022-11-19 07:14:23,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:23,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:14:23,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:14:23,922 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:14:23,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:14:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:23,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:14:23,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:14:24,063 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:14:24,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:14:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:14:24,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275082016] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:14:24,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [709375430] [2022-11-19 07:14:24,267 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-19 07:14:24,268 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:14:24,268 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:14:24,268 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:14:24,268 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:14:24,423 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:14:25,045 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '787#(and (= (mod (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 2) 0) (<= (div (+ (* (- 1) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1|) 2) 1073741823) (<= 0 (+ (* (div (+ (* (- 1) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1|) 2) 2) |ULTIMATE.start_main_~y~0#1| 2147483648)) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0))' at error location [2022-11-19 07:14:25,045 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:14:25,045 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:14:25,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 16 [2022-11-19 07:14:25,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278584236] [2022-11-19 07:14:25,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:14:25,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-19 07:14:25,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:14:25,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-19 07:14:25,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2022-11-19 07:14:25,047 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 17 states, 16 states have (on average 4.9375) internal successors, (79), 17 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 07:14:25,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:14:25,504 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2022-11-19 07:14:25,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-19 07:14:25,505 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.9375) internal successors, (79), 17 states have internal predecessors, (79), 0 states have call successors, (0), 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 27 [2022-11-19 07:14:25,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:14:25,506 INFO L225 Difference]: With dead ends: 47 [2022-11-19 07:14:25,506 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 07:14:25,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=377, Invalid=1105, Unknown=0, NotChecked=0, Total=1482 [2022-11-19 07:14:25,507 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 70 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:14:25,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 7 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:14:25,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 07:14:25,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 07:14:25,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:14:25,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 07:14:25,509 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2022-11-19 07:14:25,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:14:25,509 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 07:14:25,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.9375) internal successors, (79), 17 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 07:14:25,510 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 07:14:25,510 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 07:14:25,513 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2022-11-19 07:14:25,513 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2022-11-19 07:14:25,513 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-11-19 07:14:25,513 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-11-19 07:14:25,514 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-11-19 07:14:25,514 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2022-11-19 07:14:25,514 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-11-19 07:14:25,514 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-11-19 07:14:25,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:14:25,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 07:14:25,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 07:14:25,798 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2022-11-19 07:14:25,799 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 07:14:25,799 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2022-11-19 07:14:25,799 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2022-11-19 07:14:25,799 INFO L902 garLoopResultBuilder]: At program point L25(lines 10 26) the Hoare annotation is: true [2022-11-19 07:14:25,799 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2022-11-19 07:14:25,800 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2022-11-19 07:14:25,800 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2022-11-19 07:14:25,800 INFO L899 garLoopResultBuilder]: For program point L21-2(line 21) no Hoare annotation was computed. [2022-11-19 07:14:25,800 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2022-11-19 07:14:25,800 INFO L899 garLoopResultBuilder]: For program point L21-3(line 21) no Hoare annotation was computed. [2022-11-19 07:14:25,800 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-11-19 07:14:25,801 INFO L899 garLoopResultBuilder]: For program point L19-2(lines 19 24) no Hoare annotation was computed. [2022-11-19 07:14:25,801 INFO L899 garLoopResultBuilder]: For program point L19-3(lines 19 24) no Hoare annotation was computed. [2022-11-19 07:14:25,801 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-11-19 07:14:25,801 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2022-11-19 07:14:25,801 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2022-11-19 07:14:25,801 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 07:14:25,802 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2022-11-19 07:14:25,802 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2022-11-19 07:14:25,802 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-11-19 07:14:25,802 INFO L899 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2022-11-19 07:14:25,803 INFO L895 garLoopResultBuilder]: At program point L20-2(lines 20 23) the Hoare annotation is: (and (< 0 (+ 2147483650 |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~x~0#1| 65535) (or (<= 0 (+ 2147483647 |ULTIMATE.start_main_~y~0#1|)) (not (< 0 |ULTIMATE.start_main_~x~0#1|))) (<= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647)) [2022-11-19 07:14:25,803 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-11-19 07:14:25,806 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:14:25,808 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:14:25,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:14:25 BoogieIcfgContainer [2022-11-19 07:14:25,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:14:25,832 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:14:25,832 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:14:25,832 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:14:25,832 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:14:19" (3/4) ... [2022-11-19 07:14:25,835 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 07:14:25,843 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-19 07:14:25,843 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-19 07:14:25,844 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-19 07:14:25,885 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:14:25,885 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:14:25,886 INFO L158 Benchmark]: Toolchain (without parser) took 7056.48ms. Allocated memory was 109.1MB in the beginning and 163.6MB in the end (delta: 54.5MB). Free memory was 71.2MB in the beginning and 93.9MB in the end (delta: -22.7MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2022-11-19 07:14:25,886 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 109.1MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:14:25,886 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.48ms. Allocated memory is still 109.1MB. Free memory was 71.0MB in the beginning and 86.2MB in the end (delta: -15.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:14:25,887 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.65ms. Allocated memory is still 109.1MB. Free memory was 86.2MB in the beginning and 84.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:14:25,887 INFO L158 Benchmark]: Boogie Preprocessor took 33.32ms. Allocated memory is still 109.1MB. Free memory was 84.7MB in the beginning and 83.8MB in the end (delta: 828.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:14:25,888 INFO L158 Benchmark]: RCFGBuilder took 362.84ms. Allocated memory is still 109.1MB. Free memory was 83.8MB in the beginning and 73.6MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:14:25,888 INFO L158 Benchmark]: TraceAbstraction took 6223.87ms. Allocated memory was 109.1MB in the beginning and 163.6MB in the end (delta: 54.5MB). Free memory was 72.8MB in the beginning and 96.0MB in the end (delta: -23.2MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2022-11-19 07:14:25,889 INFO L158 Benchmark]: Witness Printer took 53.37ms. Allocated memory is still 163.6MB. Free memory was 96.0MB in the beginning and 93.9MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:14:25,892 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 109.1MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 334.48ms. Allocated memory is still 109.1MB. Free memory was 71.0MB in the beginning and 86.2MB in the end (delta: -15.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.65ms. Allocated memory is still 109.1MB. Free memory was 86.2MB in the beginning and 84.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.32ms. Allocated memory is still 109.1MB. Free memory was 84.7MB in the beginning and 83.8MB in the end (delta: 828.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 362.84ms. Allocated memory is still 109.1MB. Free memory was 83.8MB in the beginning and 73.6MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6223.87ms. Allocated memory was 109.1MB in the beginning and 163.6MB in the end (delta: 54.5MB). Free memory was 72.8MB in the beginning and 96.0MB in the end (delta: -23.2MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. * Witness Printer took 53.37ms. Allocated memory is still 163.6MB. Free memory was 96.0MB in the beginning and 93.9MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 6.1s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 167 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 167 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 258 IncrementalHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 37 mSDtfsCounter, 258 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 215 GetRequests, 120 SyntacticMatches, 14 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=6, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 9 NumberOfFragments, 28 HoareAnnotationTreeSize, 2 FomulaSimplifications, 15 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 150 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 201 ConstructedInterpolants, 0 QuantifiedInterpolants, 1042 SizeOfPredicates, 7 NumberOfNonLiveVariables, 99 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 0/84 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((0 < 2147483650 + y && x <= 65535) && (0 <= 2147483647 + y || !(0 < x))) && x + y <= 0) && y <= 2147483647 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-19 07:14:25,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36f5d49-59d6-48e4-b65f-8298403bb3cf/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE