./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-easy2-2.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_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/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_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-easy2-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/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_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/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 0caa59e1faf0ad3d2791737919ecbef32e653ee10212e2c418a84055594f6a3c --- 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 07:58:10,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:58:10,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:58:10,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:58:10,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:58:10,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:58:10,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:58:10,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:58:10,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:58:10,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:58:10,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:58:10,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:58:10,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:58:10,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:58:10,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:58:10,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:58:10,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:58:10,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:58:10,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:58:10,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:58:10,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:58:10,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:58:10,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:58:10,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:58:10,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:58:10,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:58:10,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:58:10,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:58:10,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:58:10,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:58:10,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:58:10,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:58:10,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:58:10,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:58:10,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:58:10,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:58:10,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:58:10,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:58:10,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:58:10,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:58:10,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:58:10,352 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-19 07:58:10,396 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:58:10,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:58:10,397 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:58:10,398 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:58:10,399 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:58:10,399 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:58:10,399 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:58:10,399 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:58:10,400 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:58:10,400 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:58:10,401 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:58:10,401 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:58:10,402 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:58:10,402 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:58:10,402 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:58:10,402 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:58:10,403 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:58:10,403 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:58:10,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:58:10,404 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:58:10,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:58:10,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:58:10,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:58:10,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:58:10,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:58:10,405 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 07:58:10,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:58:10,406 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:58:10,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:58:10,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:58:10,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:58:10,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:58:10,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:58:10,409 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:58:10,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:58:10,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:58:10,410 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:58:10,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:58:10,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:58:10,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:58:10,411 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_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0caa59e1faf0ad3d2791737919ecbef32e653ee10212e2c418a84055594f6a3c [2022-11-19 07:58:10,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:58:10,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:58:10,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:58:10,788 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:58:10,789 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:58:10,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-easy2-2.c [2022-11-19 07:58:10,886 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/data/6eb896d7a/00a498b1db944175aaf98a488a28ad2e/FLAG11086f966 [2022-11-19 07:58:11,419 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:58:11,420 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-easy2-2.c [2022-11-19 07:58:11,427 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/data/6eb896d7a/00a498b1db944175aaf98a488a28ad2e/FLAG11086f966 [2022-11-19 07:58:11,801 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/data/6eb896d7a/00a498b1db944175aaf98a488a28ad2e [2022-11-19 07:58:11,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:58:11,811 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:58:11,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:58:11,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:58:11,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:58:11,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:11" (1/1) ... [2022-11-19 07:58:11,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5a7612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:11, skipping insertion in model container [2022-11-19 07:58:11,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:11" (1/1) ... [2022-11-19 07:58:11,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:58:11,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:58:12,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:58:12,099 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:58:12,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:58:12,128 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:58:12,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:12 WrapperNode [2022-11-19 07:58:12,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:58:12,130 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:58:12,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:58:12,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:58:12,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:12" (1/1) ... [2022-11-19 07:58:12,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:12" (1/1) ... [2022-11-19 07:58:12,169 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2022-11-19 07:58:12,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:58:12,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:58:12,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:58:12,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:58:12,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:12" (1/1) ... [2022-11-19 07:58:12,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:12" (1/1) ... [2022-11-19 07:58:12,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:12" (1/1) ... [2022-11-19 07:58:12,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:12" (1/1) ... [2022-11-19 07:58:12,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:12" (1/1) ... [2022-11-19 07:58:12,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:12" (1/1) ... [2022-11-19 07:58:12,194 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:12" (1/1) ... [2022-11-19 07:58:12,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:12" (1/1) ... [2022-11-19 07:58:12,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:58:12,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:58:12,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:58:12,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:58:12,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:12" (1/1) ... [2022-11-19 07:58:12,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:58:12,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:58:12,247 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:58:12,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:58:12,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:58:12,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:58:12,362 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:58:12,365 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:58:12,549 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:58:12,572 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:58:12,572 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:58:12,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:12 BoogieIcfgContainer [2022-11-19 07:58:12,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:58:12,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:58:12,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:58:12,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:58:12,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:58:11" (1/3) ... [2022-11-19 07:58:12,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@299f826e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:12, skipping insertion in model container [2022-11-19 07:58:12,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:12" (2/3) ... [2022-11-19 07:58:12,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@299f826e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:12, skipping insertion in model container [2022-11-19 07:58:12,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:12" (3/3) ... [2022-11-19 07:58:12,587 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-easy2-2.c [2022-11-19 07:58:12,610 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:58:12,611 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-19 07:58:12,671 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:58:12,679 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;@76c304d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:58:12,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-19 07:58:12,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:58:12,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 07:58:12,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:12,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 07:58:12,694 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 07:58:12,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:12,701 INFO L85 PathProgramCache]: Analyzing trace with hash 60896, now seen corresponding path program 1 times [2022-11-19 07:58:12,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:12,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728235222] [2022-11-19 07:58:12,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:12,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:12,943 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 07:58:12,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:12,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728235222] [2022-11-19 07:58:12,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728235222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:58:12,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:58:12,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:58:12,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851751352] [2022-11-19 07:58:12,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:58:12,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:58:12,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:13,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:58:13,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:58:13,015 INFO L87 Difference]: Start difference. First operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:58:13,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:13,094 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-11-19 07:58:13,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:58:13,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-19 07:58:13,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:13,108 INFO L225 Difference]: With dead ends: 20 [2022-11-19 07:58:13,122 INFO L226 Difference]: Without dead ends: 17 [2022-11-19 07:58:13,126 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 07:58:13,131 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:13,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 19 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:58:13,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-19 07:58:13,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2022-11-19 07:58:13,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.6) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:58:13,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-11-19 07:58:13,212 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 3 [2022-11-19 07:58:13,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:13,212 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-11-19 07:58:13,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:58:13,213 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-11-19 07:58:13,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 07:58:13,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:13,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 07:58:13,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:58:13,215 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 07:58:13,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:13,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1887821, now seen corresponding path program 1 times [2022-11-19 07:58:13,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:13,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121164022] [2022-11-19 07:58:13,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:13,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:13,291 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 07:58:13,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:13,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121164022] [2022-11-19 07:58:13,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121164022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:58:13,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:58:13,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:58:13,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359550178] [2022-11-19 07:58:13,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:58:13,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:58:13,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:13,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:58:13,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:58:13,303 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 07:58:13,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:13,317 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-19 07:58:13,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:58:13,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 07:58:13,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:13,319 INFO L225 Difference]: With dead ends: 16 [2022-11-19 07:58:13,319 INFO L226 Difference]: Without dead ends: 15 [2022-11-19 07:58:13,320 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 07:58:13,321 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:13,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 9 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:58:13,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-19 07:58:13,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-19 07:58:13,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.5) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:58:13,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-19 07:58:13,328 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 4 [2022-11-19 07:58:13,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:13,329 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-19 07:58:13,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 07:58:13,329 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-19 07:58:13,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:58:13,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:13,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:58:13,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:58:13,331 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 07:58:13,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:13,332 INFO L85 PathProgramCache]: Analyzing trace with hash 58522498, now seen corresponding path program 1 times [2022-11-19 07:58:13,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:13,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744799678] [2022-11-19 07:58:13,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:13,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:13,398 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 07:58:13,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:13,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744799678] [2022-11-19 07:58:13,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744799678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:58:13,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:58:13,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:58:13,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074506678] [2022-11-19 07:58:13,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:58:13,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:58:13,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:13,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:58:13,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:58:13,402 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 07:58:13,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:13,415 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-11-19 07:58:13,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:58:13,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 07:58:13,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:13,417 INFO L225 Difference]: With dead ends: 15 [2022-11-19 07:58:13,417 INFO L226 Difference]: Without dead ends: 14 [2022-11-19 07:58:13,417 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 07:58:13,419 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:13,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 8 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:58:13,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-19 07:58:13,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-19 07:58:13,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:58:13,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-11-19 07:58:13,426 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2022-11-19 07:58:13,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:13,427 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-11-19 07:58:13,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 07:58:13,427 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-11-19 07:58:13,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 07:58:13,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:13,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 07:58:13,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:58:13,429 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 07:58:13,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:13,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1814197487, now seen corresponding path program 1 times [2022-11-19 07:58:13,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:13,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857066081] [2022-11-19 07:58:13,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:13,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:13,469 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 07:58:13,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:13,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857066081] [2022-11-19 07:58:13,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857066081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:58:13,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:58:13,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:58:13,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013675362] [2022-11-19 07:58:13,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:58:13,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:58:13,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:13,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:58:13,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:58:13,473 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:58:13,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:13,489 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-11-19 07:58:13,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:58:13,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 07:58:13,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:13,491 INFO L225 Difference]: With dead ends: 18 [2022-11-19 07:58:13,491 INFO L226 Difference]: Without dead ends: 17 [2022-11-19 07:58:13,492 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 07:58:13,494 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:13,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:58:13,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-19 07:58:13,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-19 07:58:13,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 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 07:58:13,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-11-19 07:58:13,500 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 6 [2022-11-19 07:58:13,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:13,501 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-11-19 07:58:13,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:58:13,501 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-11-19 07:58:13,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:58:13,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:13,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:58:13,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:58:13,503 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 07:58:13,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:13,504 INFO L85 PathProgramCache]: Analyzing trace with hash 405547300, now seen corresponding path program 1 times [2022-11-19 07:58:13,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:13,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569508615] [2022-11-19 07:58:13,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:13,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:13,571 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 07:58:13,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:13,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569508615] [2022-11-19 07:58:13,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569508615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:58:13,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:58:13,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:58:13,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78987959] [2022-11-19 07:58:13,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:58:13,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:58:13,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:13,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:58:13,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:58:13,579 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:58:13,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:13,606 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-11-19 07:58:13,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:58:13,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-19 07:58:13,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:13,609 INFO L225 Difference]: With dead ends: 17 [2022-11-19 07:58:13,610 INFO L226 Difference]: Without dead ends: 16 [2022-11-19 07:58:13,611 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 07:58:13,612 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:13,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:58:13,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-19 07:58:13,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-19 07:58:13,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:58:13,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-11-19 07:58:13,631 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2022-11-19 07:58:13,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:13,632 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-11-19 07:58:13,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:58:13,632 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-11-19 07:58:13,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:58:13,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:13,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:58:13,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:58:13,636 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 07:58:13,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:13,637 INFO L85 PathProgramCache]: Analyzing trace with hash -312935535, now seen corresponding path program 1 times [2022-11-19 07:58:13,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:13,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289580803] [2022-11-19 07:58:13,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:13,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:13,676 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 07:58:13,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:13,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289580803] [2022-11-19 07:58:13,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289580803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:58:13,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:58:13,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:58:13,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875665944] [2022-11-19 07:58:13,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:58:13,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:58:13,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:13,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:58:13,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:58:13,679 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:58:13,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:13,691 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-19 07:58:13,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:58:13,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-19 07:58:13,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:13,693 INFO L225 Difference]: With dead ends: 16 [2022-11-19 07:58:13,693 INFO L226 Difference]: Without dead ends: 15 [2022-11-19 07:58:13,693 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 07:58:13,695 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:13,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:58:13,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-19 07:58:13,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-19 07:58:13,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:58:13,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-19 07:58:13,700 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-11-19 07:58:13,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:13,700 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-19 07:58:13,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:58:13,701 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-19 07:58:13,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 07:58:13,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:13,702 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:58:13,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:58:13,702 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 07:58:13,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:13,703 INFO L85 PathProgramCache]: Analyzing trace with hash -83337101, now seen corresponding path program 1 times [2022-11-19 07:58:13,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:13,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917607900] [2022-11-19 07:58:13,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:13,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:13,759 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 07:58:13,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:13,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917607900] [2022-11-19 07:58:13,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917607900] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:58:13,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474942347] [2022-11-19 07:58:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:13,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:58:13,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:58:13,767 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:58:13,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:58:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:13,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:58:13,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:58:13,915 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 07:58:13,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:58:13,970 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 07:58:13,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474942347] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:58:13,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [543012536] [2022-11-19 07:58:14,005 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 07:58:14,005 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:58:14,009 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:58:14,014 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:58:14,015 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:58:14,286 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:58:14,525 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '315#(and (< 0 |ULTIMATE.start_main_~z~0#1|) (<= (+ |ULTIMATE.start_main_~y~0#1| 1) 0) (not (<= |ULTIMATE.start_main_~x~0#1| 2147483646)) (<= |ULTIMATE.start_main_~z~0#1| 2147483646) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)))' at error location [2022-11-19 07:58:14,525 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:58:14,525 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:58:14,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-19 07:58:14,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220033121] [2022-11-19 07:58:14,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:58:14,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:58:14,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:14,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:58:14,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:58:14,527 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:58:14,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:14,557 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2022-11-19 07:58:14,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:58:14,557 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-19 07:58:14,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:14,558 INFO L225 Difference]: With dead ends: 36 [2022-11-19 07:58:14,558 INFO L226 Difference]: Without dead ends: 35 [2022-11-19 07:58:14,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:58:14,560 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 16 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:14,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 31 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:58:14,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-19 07:58:14,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2022-11-19 07:58:14,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 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 07:58:14,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-11-19 07:58:14,566 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 10 [2022-11-19 07:58:14,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:14,566 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-11-19 07:58:14,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:58:14,567 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-11-19 07:58:14,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 07:58:14,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:14,568 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-19 07:58:14,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:58:14,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:58:14,774 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 07:58:14,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:14,774 INFO L85 PathProgramCache]: Analyzing trace with hash -204434052, now seen corresponding path program 1 times [2022-11-19 07:58:14,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:14,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169733016] [2022-11-19 07:58:14,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:14,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:14,844 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 07:58:14,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:14,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169733016] [2022-11-19 07:58:14,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169733016] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:58:14,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532415177] [2022-11-19 07:58:14,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:14,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:58:14,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:58:14,855 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:58:14,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:58:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:14,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:58:14,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:58:14,941 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 07:58:14,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:58:14,997 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 07:58:14,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532415177] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:58:14,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1276270984] [2022-11-19 07:58:15,002 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 07:58:15,003 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:58:15,003 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:58:15,004 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:58:15,004 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:58:15,167 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:58:15,480 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '478#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2022-11-19 07:58:15,480 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:58:15,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:58:15,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-19 07:58:15,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610215537] [2022-11-19 07:58:15,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:58:15,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:58:15,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:15,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:58:15,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:58:15,483 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 07:58:15,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:15,512 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2022-11-19 07:58:15,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:58:15,513 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 07:58:15,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:15,559 INFO L225 Difference]: With dead ends: 37 [2022-11-19 07:58:15,559 INFO L226 Difference]: Without dead ends: 36 [2022-11-19 07:58:15,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:58:15,560 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:15,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 30 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:58:15,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-19 07:58:15,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-19 07:58:15,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:58:15,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2022-11-19 07:58:15,568 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 13 [2022-11-19 07:58:15,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:15,568 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2022-11-19 07:58:15,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 07:58:15,569 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2022-11-19 07:58:15,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-19 07:58:15,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:15,570 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1] [2022-11-19 07:58:15,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:58:15,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-19 07:58:15,771 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 07:58:15,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:15,771 INFO L85 PathProgramCache]: Analyzing trace with hash -2101518560, now seen corresponding path program 2 times [2022-11-19 07:58:15,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:15,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641453085] [2022-11-19 07:58:15,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:15,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:16,019 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:16,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:16,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641453085] [2022-11-19 07:58:16,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641453085] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:58:16,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981466519] [2022-11-19 07:58:16,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:58:16,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:58:16,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:58:16,022 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:58:16,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:58:16,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 07:58:16,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:58:16,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:58:16,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:58:16,189 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:16,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:58:16,329 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:16,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981466519] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:58:16,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1648000950] [2022-11-19 07:58:16,333 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 07:58:16,333 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:58:16,334 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:58:16,334 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:58:16,334 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:58:16,438 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:58:16,654 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '759#(and (< 0 |ULTIMATE.start_main_~z~0#1|) (<= (+ |ULTIMATE.start_main_~y~0#1| 1) 0) (not (<= |ULTIMATE.start_main_~x~0#1| 2147483646)) (<= |ULTIMATE.start_main_~z~0#1| 2147483646) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)))' at error location [2022-11-19 07:58:16,654 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:58:16,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:58:16,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-19 07:58:16,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111138928] [2022-11-19 07:58:16,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:58:16,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 07:58:16,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:16,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 07:58:16,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2022-11-19 07:58:16,656 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 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 07:58:16,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:16,707 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2022-11-19 07:58:16,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 07:58:16,708 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 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 31 [2022-11-19 07:58:16,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:16,709 INFO L225 Difference]: With dead ends: 81 [2022-11-19 07:58:16,709 INFO L226 Difference]: Without dead ends: 80 [2022-11-19 07:58:16,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2022-11-19 07:58:16,710 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 44 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:16,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 65 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:58:16,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-19 07:58:16,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2022-11-19 07:58:16,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.095890410958904) internal successors, (80), 74 states have internal predecessors, (80), 0 states have call successors, (0), 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 07:58:16,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2022-11-19 07:58:16,718 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 31 [2022-11-19 07:58:16,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:16,719 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2022-11-19 07:58:16,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 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 07:58:16,719 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2022-11-19 07:58:16,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-19 07:58:16,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:16,720 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 1, 1] [2022-11-19 07:58:16,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-19 07:58:16,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:58:16,926 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 07:58:16,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:16,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1398897583, now seen corresponding path program 2 times [2022-11-19 07:58:16,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:16,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091031924] [2022-11-19 07:58:16,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:16,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:17,089 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:17,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:17,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091031924] [2022-11-19 07:58:17,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091031924] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:58:17,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253821114] [2022-11-19 07:58:17,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:58:17,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:58:17,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:58:17,093 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:58:17,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:58:17,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 07:58:17,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:58:17,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:58:17,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:58:17,232 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:17,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:58:17,351 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:17,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253821114] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:58:17,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [805598261] [2022-11-19 07:58:17,355 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 07:58:17,355 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:58:17,355 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:58:17,356 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:58:17,357 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:58:17,442 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:58:17,633 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1153#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2022-11-19 07:58:17,634 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:58:17,634 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:58:17,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-19 07:58:17,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908254028] [2022-11-19 07:58:17,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:58:17,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 07:58:17,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:17,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 07:58:17,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-11-19 07:58:17,636 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 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 07:58:17,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:17,685 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2022-11-19 07:58:17,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 07:58:17,686 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-19 07:58:17,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:17,687 INFO L225 Difference]: With dead ends: 79 [2022-11-19 07:58:17,687 INFO L226 Difference]: Without dead ends: 78 [2022-11-19 07:58:17,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-11-19 07:58:17,688 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 10 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:17,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 60 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:58:17,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-19 07:58:17,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-11-19 07:58:17,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 77 states have internal predecessors, (78), 0 states have call successors, (0), 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 07:58:17,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2022-11-19 07:58:17,698 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 34 [2022-11-19 07:58:17,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:17,699 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2022-11-19 07:58:17,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 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 07:58:17,699 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2022-11-19 07:58:17,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-19 07:58:17,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:17,701 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1] [2022-11-19 07:58:17,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:58:17,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-19 07:58:17,907 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 07:58:17,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:17,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1428056832, now seen corresponding path program 3 times [2022-11-19 07:58:17,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:17,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156432017] [2022-11-19 07:58:17,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:17,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:18,187 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:18,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:18,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156432017] [2022-11-19 07:58:18,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156432017] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:58:18,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253589330] [2022-11-19 07:58:18,189 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:58:18,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:58:18,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:58:18,190 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:58:18,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:58:18,272 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:58:18,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:58:18,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 07:58:18,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:58:18,445 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:18,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:58:18,804 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:18,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253589330] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:58:18,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1906785153] [2022-11-19 07:58:18,806 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 07:58:18,807 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:58:18,807 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:58:18,807 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:58:18,808 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:58:18,898 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:58:19,161 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1794#(and (< 0 |ULTIMATE.start_main_~z~0#1|) (<= (+ |ULTIMATE.start_main_~y~0#1| 1) 0) (not (<= |ULTIMATE.start_main_~x~0#1| 2147483646)) (<= |ULTIMATE.start_main_~z~0#1| 2147483646) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)))' at error location [2022-11-19 07:58:19,162 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:58:19,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:58:19,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-19 07:58:19,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538640142] [2022-11-19 07:58:19,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:58:19,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 07:58:19,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:19,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 07:58:19,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=572, Unknown=0, NotChecked=0, Total=870 [2022-11-19 07:58:19,165 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand has 24 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 23 states have internal predecessors, (146), 0 states have call successors, (0), 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 07:58:19,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:19,278 INFO L93 Difference]: Finished difference Result 171 states and 182 transitions. [2022-11-19 07:58:19,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 07:58:19,279 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 23 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-19 07:58:19,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:19,280 INFO L225 Difference]: With dead ends: 171 [2022-11-19 07:58:19,280 INFO L226 Difference]: Without dead ends: 170 [2022-11-19 07:58:19,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=298, Invalid=572, Unknown=0, NotChecked=0, Total=870 [2022-11-19 07:58:19,282 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 102 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:19,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 133 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:58:19,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-19 07:58:19,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 159. [2022-11-19 07:58:19,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 157 states have (on average 1.0828025477707006) internal successors, (170), 158 states have internal predecessors, (170), 0 states have call successors, (0), 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 07:58:19,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 170 transitions. [2022-11-19 07:58:19,297 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 170 transitions. Word has length 73 [2022-11-19 07:58:19,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:19,297 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 170 transitions. [2022-11-19 07:58:19,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 23 states have internal predecessors, (146), 0 states have call successors, (0), 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 07:58:19,298 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 170 transitions. [2022-11-19 07:58:19,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-19 07:58:19,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:19,300 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 1, 1] [2022-11-19 07:58:19,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:58:19,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:58:19,506 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 07:58:19,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:19,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1589970481, now seen corresponding path program 3 times [2022-11-19 07:58:19,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:19,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64344381] [2022-11-19 07:58:19,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:19,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:19,851 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:19,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:19,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64344381] [2022-11-19 07:58:19,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64344381] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:58:19,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529321133] [2022-11-19 07:58:19,852 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:58:19,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:58:19,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:58:19,855 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:58:19,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 07:58:19,927 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:58:19,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:58:19,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 07:58:19,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:58:20,081 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:20,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:58:20,444 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:20,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529321133] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:58:20,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1113779078] [2022-11-19 07:58:20,447 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 07:58:20,447 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:58:20,447 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:58:20,448 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:58:20,448 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:58:20,516 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:58:20,776 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2650#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2022-11-19 07:58:20,777 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:58:20,777 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:58:20,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-19 07:58:20,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574699280] [2022-11-19 07:58:20,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:58:20,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 07:58:20,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:20,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 07:58:20,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=575, Unknown=0, NotChecked=0, Total=870 [2022-11-19 07:58:20,780 INFO L87 Difference]: Start difference. First operand 159 states and 170 transitions. Second operand has 24 states, 23 states have (on average 6.608695652173913) internal successors, (152), 23 states have internal predecessors, (152), 0 states have call successors, (0), 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 07:58:20,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:20,924 INFO L93 Difference]: Finished difference Result 163 states and 174 transitions. [2022-11-19 07:58:20,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 07:58:20,925 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.608695652173913) internal successors, (152), 23 states have internal predecessors, (152), 0 states have call successors, (0), 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 76 [2022-11-19 07:58:20,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:20,927 INFO L225 Difference]: With dead ends: 163 [2022-11-19 07:58:20,927 INFO L226 Difference]: Without dead ends: 162 [2022-11-19 07:58:20,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=295, Invalid=575, Unknown=0, NotChecked=0, Total=870 [2022-11-19 07:58:20,929 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:20,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 122 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:58:20,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-19 07:58:20,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-11-19 07:58:20,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 160 states have (on average 1.0125) internal successors, (162), 161 states have internal predecessors, (162), 0 states have call successors, (0), 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 07:58:20,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2022-11-19 07:58:20,957 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 76 [2022-11-19 07:58:20,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:20,958 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2022-11-19 07:58:20,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.608695652173913) internal successors, (152), 23 states have internal predecessors, (152), 0 states have call successors, (0), 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 07:58:20,959 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2022-11-19 07:58:20,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-19 07:58:20,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:20,964 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 1, 1] [2022-11-19 07:58:20,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:58:21,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:58:21,171 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 07:58:21,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:21,171 INFO L85 PathProgramCache]: Analyzing trace with hash -85722944, now seen corresponding path program 4 times [2022-11-19 07:58:21,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:21,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364426487] [2022-11-19 07:58:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:21,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:22,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1661 backedges. 0 proven. 1661 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:22,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:22,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364426487] [2022-11-19 07:58:22,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364426487] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:58:22,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711922131] [2022-11-19 07:58:22,119 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 07:58:22,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:58:22,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:58:22,121 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:58:22,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:58:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:22,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-19 07:58:22,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:58:22,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1661 backedges. 0 proven. 1661 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:22,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:58:23,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1661 backedges. 0 proven. 1661 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:23,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711922131] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:58:23,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1810199523] [2022-11-19 07:58:23,818 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 07:58:23,818 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:58:23,819 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:58:23,819 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:58:23,819 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:58:23,895 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:58:24,210 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4011#(and (< 0 |ULTIMATE.start_main_~z~0#1|) (<= (+ |ULTIMATE.start_main_~y~0#1| 1) 0) (not (<= |ULTIMATE.start_main_~x~0#1| 2147483646)) (<= |ULTIMATE.start_main_~z~0#1| 2147483646) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)))' at error location [2022-11-19 07:58:24,211 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:58:24,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:58:24,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-11-19 07:58:24,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627643732] [2022-11-19 07:58:24,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:58:24,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-19 07:58:24,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:24,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-19 07:58:24,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1150, Invalid=1712, Unknown=0, NotChecked=0, Total=2862 [2022-11-19 07:58:24,216 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand has 48 states, 47 states have (on average 6.680851063829787) internal successors, (314), 47 states have internal predecessors, (314), 0 states have call successors, (0), 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 07:58:24,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:24,464 INFO L93 Difference]: Finished difference Result 351 states and 374 transitions. [2022-11-19 07:58:24,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-19 07:58:24,465 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.680851063829787) internal successors, (314), 47 states have internal predecessors, (314), 0 states have call successors, (0), 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 157 [2022-11-19 07:58:24,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:24,466 INFO L225 Difference]: With dead ends: 351 [2022-11-19 07:58:24,466 INFO L226 Difference]: Without dead ends: 350 [2022-11-19 07:58:24,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1150, Invalid=1712, Unknown=0, NotChecked=0, Total=2862 [2022-11-19 07:58:24,472 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 185 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:24,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 261 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:58:24,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-11-19 07:58:24,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 327. [2022-11-19 07:58:24,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 325 states have (on average 1.0769230769230769) internal successors, (350), 326 states have internal predecessors, (350), 0 states have call successors, (0), 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 07:58:24,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 350 transitions. [2022-11-19 07:58:24,503 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 350 transitions. Word has length 157 [2022-11-19 07:58:24,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:24,503 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 350 transitions. [2022-11-19 07:58:24,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.680851063829787) internal successors, (314), 47 states have internal predecessors, (314), 0 states have call successors, (0), 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 07:58:24,504 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 350 transitions. [2022-11-19 07:58:24,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-19 07:58:24,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:24,506 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 1, 1] [2022-11-19 07:58:24,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:58:24,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-19 07:58:24,712 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 07:58:24,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:24,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1733361167, now seen corresponding path program 4 times [2022-11-19 07:58:24,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:24,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077301486] [2022-11-19 07:58:24,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:24,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:25,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 0 proven. 1727 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:25,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:25,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077301486] [2022-11-19 07:58:25,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077301486] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:58:25,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545887940] [2022-11-19 07:58:25,420 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 07:58:25,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:58:25,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:58:25,422 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:58:25,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 07:58:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:25,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-19 07:58:25,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:58:25,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 0 proven. 1727 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:25,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:58:26,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 0 proven. 1727 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:26,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545887940] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:58:26,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [834330745] [2022-11-19 07:58:26,946 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 07:58:26,946 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:58:26,947 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:58:26,947 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:58:26,947 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:58:27,020 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:58:27,307 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5791#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2022-11-19 07:58:27,307 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:58:27,308 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:58:27,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-11-19 07:58:27,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56296066] [2022-11-19 07:58:27,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:58:27,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-19 07:58:27,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:27,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-19 07:58:27,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1147, Invalid=1715, Unknown=0, NotChecked=0, Total=2862 [2022-11-19 07:58:27,311 INFO L87 Difference]: Start difference. First operand 327 states and 350 transitions. Second operand has 48 states, 47 states have (on average 6.808510638297872) internal successors, (320), 47 states have internal predecessors, (320), 0 states have call successors, (0), 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 07:58:27,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:27,493 INFO L93 Difference]: Finished difference Result 331 states and 354 transitions. [2022-11-19 07:58:27,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-19 07:58:27,494 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.808510638297872) internal successors, (320), 47 states have internal predecessors, (320), 0 states have call successors, (0), 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 160 [2022-11-19 07:58:27,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:27,496 INFO L225 Difference]: With dead ends: 331 [2022-11-19 07:58:27,496 INFO L226 Difference]: Without dead ends: 330 [2022-11-19 07:58:27,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1147, Invalid=1715, Unknown=0, NotChecked=0, Total=2862 [2022-11-19 07:58:27,498 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 46 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:27,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 245 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:58:27,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-11-19 07:58:27,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2022-11-19 07:58:27,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 328 states have (on average 1.0060975609756098) internal successors, (330), 329 states have internal predecessors, (330), 0 states have call successors, (0), 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 07:58:27,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 330 transitions. [2022-11-19 07:58:27,511 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 330 transitions. Word has length 160 [2022-11-19 07:58:27,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:27,512 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 330 transitions. [2022-11-19 07:58:27,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.808510638297872) internal successors, (320), 47 states have internal predecessors, (320), 0 states have call successors, (0), 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 07:58:27,513 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 330 transitions. [2022-11-19 07:58:27,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-11-19 07:58:27,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:27,517 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 1, 1] [2022-11-19 07:58:27,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-19 07:58:27,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-19 07:58:27,734 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 07:58:27,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:27,735 INFO L85 PathProgramCache]: Analyzing trace with hash -967270336, now seen corresponding path program 5 times [2022-11-19 07:58:27,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:27,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390135796] [2022-11-19 07:58:27,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:27,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:30,623 INFO L134 CoverageAnalysis]: Checked inductivity of 7337 backedges. 0 proven. 7337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:30,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:30,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390135796] [2022-11-19 07:58:30,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390135796] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:58:30,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377862198] [2022-11-19 07:58:30,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:58:30,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:58:30,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:58:30,626 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:58:30,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-19 07:58:30,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-19 07:58:30,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:58:30,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-19 07:58:30,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:58:31,415 INFO L134 CoverageAnalysis]: Checked inductivity of 7337 backedges. 0 proven. 7337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:31,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:58:35,232 INFO L134 CoverageAnalysis]: Checked inductivity of 7337 backedges. 0 proven. 7337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:35,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377862198] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:58:35,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1104631106] [2022-11-19 07:58:35,235 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 07:58:35,235 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:58:35,235 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:58:35,235 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:58:35,236 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:58:35,295 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:58:35,734 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8592#(and (< 0 |ULTIMATE.start_main_~z~0#1|) (<= (+ |ULTIMATE.start_main_~y~0#1| 1) 0) (not (<= |ULTIMATE.start_main_~x~0#1| 2147483646)) (<= |ULTIMATE.start_main_~z~0#1| 2147483646) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)))' at error location [2022-11-19 07:58:35,734 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:58:35,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:58:35,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-11-19 07:58:35,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473887389] [2022-11-19 07:58:35,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:58:35,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-19 07:58:35,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:35,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-19 07:58:35,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4582, Invalid=5720, Unknown=0, NotChecked=0, Total=10302 [2022-11-19 07:58:35,745 INFO L87 Difference]: Start difference. First operand 330 states and 330 transitions. Second operand has 96 states, 95 states have (on average 6.842105263157895) internal successors, (650), 95 states have internal predecessors, (650), 0 states have call successors, (0), 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 07:58:36,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:36,431 INFO L93 Difference]: Finished difference Result 711 states and 758 transitions. [2022-11-19 07:58:36,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-19 07:58:36,432 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 6.842105263157895) internal successors, (650), 95 states have internal predecessors, (650), 0 states have call successors, (0), 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 325 [2022-11-19 07:58:36,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:36,436 INFO L225 Difference]: With dead ends: 711 [2022-11-19 07:58:36,436 INFO L226 Difference]: Without dead ends: 710 [2022-11-19 07:58:36,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1020 GetRequests, 920 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4582, Invalid=5720, Unknown=0, NotChecked=0, Total=10302 [2022-11-19 07:58:36,441 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 498 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:36,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 527 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:58:36,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-11-19 07:58:36,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 663. [2022-11-19 07:58:36,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 661 states have (on average 1.0741301059001513) internal successors, (710), 662 states have internal predecessors, (710), 0 states have call successors, (0), 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 07:58:36,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 710 transitions. [2022-11-19 07:58:36,474 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 710 transitions. Word has length 325 [2022-11-19 07:58:36,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:36,475 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 710 transitions. [2022-11-19 07:58:36,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 6.842105263157895) internal successors, (650), 95 states have internal predecessors, (650), 0 states have call successors, (0), 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 07:58:36,476 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 710 transitions. [2022-11-19 07:58:36,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2022-11-19 07:58:36,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:36,484 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 46, 1, 1] [2022-11-19 07:58:36,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-19 07:58:36,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-19 07:58:36,691 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 07:58:36,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:36,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1014946161, now seen corresponding path program 5 times [2022-11-19 07:58:36,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:36,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407352205] [2022-11-19 07:58:36,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:36,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:39,396 INFO L134 CoverageAnalysis]: Checked inductivity of 7475 backedges. 0 proven. 7475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:39,397 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:39,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407352205] [2022-11-19 07:58:39,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407352205] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:58:39,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646488396] [2022-11-19 07:58:39,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:58:39,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:58:39,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:58:39,399 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:58:39,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 07:58:39,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-19 07:58:39,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:58:39,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-19 07:58:39,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:58:40,226 INFO L134 CoverageAnalysis]: Checked inductivity of 7475 backedges. 0 proven. 7475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:40,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:58:43,792 INFO L134 CoverageAnalysis]: Checked inductivity of 7475 backedges. 0 proven. 7475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:43,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646488396] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:58:43,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1367050075] [2022-11-19 07:58:43,794 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 07:58:43,794 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:58:43,794 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:58:43,794 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:58:43,795 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:58:43,849 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:58:44,216 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12220#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2022-11-19 07:58:44,217 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:58:44,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:58:44,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-11-19 07:58:44,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897617211] [2022-11-19 07:58:44,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:58:44,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-19 07:58:44,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:44,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-19 07:58:44,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4579, Invalid=5723, Unknown=0, NotChecked=0, Total=10302 [2022-11-19 07:58:44,224 INFO L87 Difference]: Start difference. First operand 663 states and 710 transitions. Second operand has 96 states, 95 states have (on average 6.905263157894737) internal successors, (656), 95 states have internal predecessors, (656), 0 states have call successors, (0), 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 07:58:44,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:44,742 INFO L93 Difference]: Finished difference Result 667 states and 714 transitions. [2022-11-19 07:58:44,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-19 07:58:44,743 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 6.905263157894737) internal successors, (656), 95 states have internal predecessors, (656), 0 states have call successors, (0), 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 328 [2022-11-19 07:58:44,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:44,747 INFO L225 Difference]: With dead ends: 667 [2022-11-19 07:58:44,747 INFO L226 Difference]: Without dead ends: 666 [2022-11-19 07:58:44,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1029 GetRequests, 929 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4579, Invalid=5723, Unknown=0, NotChecked=0, Total=10302 [2022-11-19 07:58:44,751 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 94 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:44,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 482 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:58:44,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-11-19 07:58:44,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2022-11-19 07:58:44,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 664 states have (on average 1.0030120481927711) internal successors, (666), 665 states have internal predecessors, (666), 0 states have call successors, (0), 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 07:58:44,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 666 transitions. [2022-11-19 07:58:44,786 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 666 transitions. Word has length 328 [2022-11-19 07:58:44,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:44,787 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 666 transitions. [2022-11-19 07:58:44,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 6.905263157894737) internal successors, (656), 95 states have internal predecessors, (656), 0 states have call successors, (0), 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 07:58:44,787 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 666 transitions. [2022-11-19 07:58:44,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2022-11-19 07:58:44,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:44,803 INFO L195 NwaCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 1, 1] [2022-11-19 07:58:44,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 07:58:45,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:58:45,010 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 07:58:45,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:45,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1019121856, now seen corresponding path program 6 times [2022-11-19 07:58:45,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:45,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370741926] [2022-11-19 07:58:45,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:45,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:54,401 INFO L134 CoverageAnalysis]: Checked inductivity of 30785 backedges. 0 proven. 30785 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:54,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:54,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370741926] [2022-11-19 07:58:54,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370741926] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:58:54,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159398460] [2022-11-19 07:58:54,402 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:58:54,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:58:54,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:58:54,404 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:58:54,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-19 07:58:54,691 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:58:54,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:58:54,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 1232 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-19 07:58:54,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:58:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 30785 backedges. 0 proven. 30785 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:58:55,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:59:07,633 INFO L134 CoverageAnalysis]: Checked inductivity of 30785 backedges. 0 proven. 30785 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:07,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159398460] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:59:07,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [386128273] [2022-11-19 07:59:07,635 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 07:59:07,635 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:59:07,636 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:59:07,636 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:59:07,636 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:59:07,696 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:59:08,228 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17901#(and (< 0 |ULTIMATE.start_main_~z~0#1|) (<= (+ |ULTIMATE.start_main_~y~0#1| 1) 0) (not (<= |ULTIMATE.start_main_~x~0#1| 2147483646)) (<= |ULTIMATE.start_main_~z~0#1| 2147483646) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)))' at error location [2022-11-19 07:59:08,228 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:59:08,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:59:08,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2022-11-19 07:59:08,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115384111] [2022-11-19 07:59:08,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:59:08,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-19 07:59:08,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:08,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-19 07:59:08,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18358, Invalid=20648, Unknown=0, NotChecked=0, Total=39006 [2022-11-19 07:59:08,242 INFO L87 Difference]: Start difference. First operand 666 states and 666 transitions. Second operand has 192 states, 191 states have (on average 6.9214659685863875) internal successors, (1322), 191 states have internal predecessors, (1322), 0 states have call successors, (0), 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 07:59:11,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:11,058 INFO L93 Difference]: Finished difference Result 1431 states and 1526 transitions. [2022-11-19 07:59:11,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-19 07:59:11,059 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 6.9214659685863875) internal successors, (1322), 191 states have internal predecessors, (1322), 0 states have call successors, (0), 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 661 [2022-11-19 07:59:11,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:11,066 INFO L225 Difference]: With dead ends: 1431 [2022-11-19 07:59:11,066 INFO L226 Difference]: Without dead ends: 1430 [2022-11-19 07:59:11,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2076 GetRequests, 1880 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1703 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=18358, Invalid=20648, Unknown=0, NotChecked=0, Total=39006 [2022-11-19 07:59:11,072 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1005 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:11,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 1055 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:59:11,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2022-11-19 07:59:11,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1335. [2022-11-19 07:59:11,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1335 states, 1333 states have (on average 1.072768192048012) internal successors, (1430), 1334 states have internal predecessors, (1430), 0 states have call successors, (0), 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 07:59:11,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1430 transitions. [2022-11-19 07:59:11,115 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1430 transitions. Word has length 661 [2022-11-19 07:59:11,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:11,116 INFO L495 AbstractCegarLoop]: Abstraction has 1335 states and 1430 transitions. [2022-11-19 07:59:11,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 6.9214659685863875) internal successors, (1322), 191 states have internal predecessors, (1322), 0 states have call successors, (0), 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 07:59:11,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1430 transitions. [2022-11-19 07:59:11,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2022-11-19 07:59:11,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:11,136 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 94, 94, 94, 1, 1] [2022-11-19 07:59:11,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-19 07:59:11,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-19 07:59:11,343 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 07:59:11,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:11,344 INFO L85 PathProgramCache]: Analyzing trace with hash 464648079, now seen corresponding path program 6 times [2022-11-19 07:59:11,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:11,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444633531] [2022-11-19 07:59:11,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:11,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:20,020 INFO L134 CoverageAnalysis]: Checked inductivity of 31067 backedges. 0 proven. 31067 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:20,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:20,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444633531] [2022-11-19 07:59:20,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444633531] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:59:20,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325336559] [2022-11-19 07:59:20,021 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:59:20,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:59:20,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:59:20,022 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:59:20,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-19 07:59:20,269 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:59:20,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:59:20,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 1237 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-19 07:59:20,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:59:21,478 INFO L134 CoverageAnalysis]: Checked inductivity of 31067 backedges. 0 proven. 31067 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:21,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:59:33,921 INFO L134 CoverageAnalysis]: Checked inductivity of 31067 backedges. 0 proven. 31067 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:33,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325336559] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:59:33,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [218688280] [2022-11-19 07:59:33,923 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 07:59:33,923 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:59:33,923 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:59:33,923 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:59:33,924 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:59:33,973 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:59:34,481 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25225#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2022-11-19 07:59:34,481 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:59:34,481 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:59:34,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2022-11-19 07:59:34,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488441756] [2022-11-19 07:59:34,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:59:34,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-19 07:59:34,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:34,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-19 07:59:34,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18355, Invalid=20651, Unknown=0, NotChecked=0, Total=39006 [2022-11-19 07:59:34,515 INFO L87 Difference]: Start difference. First operand 1335 states and 1430 transitions. Second operand has 192 states, 191 states have (on average 6.952879581151833) internal successors, (1328), 191 states have internal predecessors, (1328), 0 states have call successors, (0), 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 07:59:36,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:36,491 INFO L93 Difference]: Finished difference Result 1339 states and 1434 transitions. [2022-11-19 07:59:36,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-19 07:59:36,493 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 6.952879581151833) internal successors, (1328), 191 states have internal predecessors, (1328), 0 states have call successors, (0), 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 664 [2022-11-19 07:59:36,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:36,498 INFO L225 Difference]: With dead ends: 1339 [2022-11-19 07:59:36,499 INFO L226 Difference]: Without dead ends: 1338 [2022-11-19 07:59:36,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2085 GetRequests, 1889 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=18355, Invalid=20651, Unknown=0, NotChecked=0, Total=39006 [2022-11-19 07:59:36,503 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 190 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:36,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 965 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:59:36,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2022-11-19 07:59:36,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1338. [2022-11-19 07:59:36,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1336 states have (on average 1.001497005988024) internal successors, (1338), 1337 states have internal predecessors, (1338), 0 states have call successors, (0), 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 07:59:36,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1338 transitions. [2022-11-19 07:59:36,545 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1338 transitions. Word has length 664 [2022-11-19 07:59:36,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:36,547 INFO L495 AbstractCegarLoop]: Abstraction has 1338 states and 1338 transitions. [2022-11-19 07:59:36,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 6.952879581151833) internal successors, (1328), 191 states have internal predecessors, (1328), 0 states have call successors, (0), 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 07:59:36,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1338 transitions. [2022-11-19 07:59:36,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1334 [2022-11-19 07:59:36,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:36,559 INFO L195 NwaCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 190, 1, 1] [2022-11-19 07:59:36,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-19 07:59:36,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-19 07:59:36,760 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 07:59:36,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:36,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1460735296, now seen corresponding path program 7 times [2022-11-19 07:59:36,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:36,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443690253] [2022-11-19 07:59:36,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:36,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:00:13,258 INFO L134 CoverageAnalysis]: Checked inductivity of 126065 backedges. 0 proven. 126065 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:00:13,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:00:13,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443690253] [2022-11-19 08:00:13,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443690253] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:00:13,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441487478] [2022-11-19 08:00:13,260 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 08:00:13,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:00:13,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:00:13,263 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:00:13,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-19 08:00:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:00:13,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 2480 conjuncts, 192 conjunts are in the unsatisfiable core [2022-11-19 08:00:13,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:00:15,633 INFO L134 CoverageAnalysis]: Checked inductivity of 126065 backedges. 0 proven. 126065 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:00:15,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:01:01,383 INFO L134 CoverageAnalysis]: Checked inductivity of 126065 backedges. 0 proven. 126065 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:01:01,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441487478] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:01:01,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1940805938] [2022-11-19 08:01:01,386 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 08:01:01,386 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:01:01,387 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:01:01,387 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:01:01,387 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:01:01,438 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:01:02,316 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '36666#(and (< 0 |ULTIMATE.start_main_~z~0#1|) (<= (+ |ULTIMATE.start_main_~y~0#1| 1) 0) (not (<= |ULTIMATE.start_main_~x~0#1| 2147483646)) (<= |ULTIMATE.start_main_~z~0#1| 2147483646) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)))' at error location [2022-11-19 08:01:02,316 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:01:02,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:01:02,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2022-11-19 08:01:02,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779060235] [2022-11-19 08:01:02,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:01:02,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-11-19 08:01:02,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:01:02,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-11-19 08:01:02,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73558, Invalid=78152, Unknown=0, NotChecked=0, Total=151710 [2022-11-19 08:01:02,347 INFO L87 Difference]: Start difference. First operand 1338 states and 1338 transitions. Second operand has 384 states, 383 states have (on average 6.960835509138382) internal successors, (2666), 383 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:01:18,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:18,569 INFO L93 Difference]: Finished difference Result 2871 states and 3062 transitions. [2022-11-19 08:01:18,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-11-19 08:01:18,571 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 6.960835509138382) internal successors, (2666), 383 states have internal predecessors, (2666), 0 states have call successors, (0), 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 1333 [2022-11-19 08:01:18,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:18,580 INFO L225 Difference]: With dead ends: 2871 [2022-11-19 08:01:18,581 INFO L226 Difference]: Without dead ends: 2870 [2022-11-19 08:01:18,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4188 GetRequests, 3800 SyntacticMatches, 0 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3431 ImplicationChecksByTransitivity, 59.1s TimeCoverageRelationStatistics Valid=73558, Invalid=78152, Unknown=0, NotChecked=0, Total=151710 [2022-11-19 08:01:18,592 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2194 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:18,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2194 Valid, 2114 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-19 08:01:18,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2022-11-19 08:01:18,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2679. [2022-11-19 08:01:18,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2679 states, 2677 states have (on average 1.0720956294359358) internal successors, (2870), 2678 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:01:18,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2679 states to 2679 states and 2870 transitions. [2022-11-19 08:01:18,662 INFO L78 Accepts]: Start accepts. Automaton has 2679 states and 2870 transitions. Word has length 1333 [2022-11-19 08:01:18,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:18,665 INFO L495 AbstractCegarLoop]: Abstraction has 2679 states and 2870 transitions. [2022-11-19 08:01:18,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 6.960835509138382) internal successors, (2666), 383 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:01:18,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2679 states and 2870 transitions. [2022-11-19 08:01:18,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1337 [2022-11-19 08:01:18,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:18,681 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 191, 190, 190, 190, 1, 1] [2022-11-19 08:01:18,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-19 08:01:18,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:01:18,891 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:01:18,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:18,892 INFO L85 PathProgramCache]: Analyzing trace with hash 156604815, now seen corresponding path program 7 times [2022-11-19 08:01:18,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:01:18,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100931200] [2022-11-19 08:01:18,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:18,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:01:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:56,638 INFO L134 CoverageAnalysis]: Checked inductivity of 126635 backedges. 0 proven. 126635 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:01:56,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:01:56,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100931200] [2022-11-19 08:01:56,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100931200] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:01:56,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637641855] [2022-11-19 08:01:56,639 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 08:01:56,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:01:56,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:01:56,640 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:01:56,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-19 08:01:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:57,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 2485 conjuncts, 192 conjunts are in the unsatisfiable core [2022-11-19 08:01:57,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:01:59,044 INFO L134 CoverageAnalysis]: Checked inductivity of 126635 backedges. 0 proven. 126635 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:01:59,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:02:45,881 INFO L134 CoverageAnalysis]: Checked inductivity of 126635 backedges. 0 proven. 126635 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:02:45,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637641855] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:02:45,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [811340689] [2022-11-19 08:02:45,883 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 08:02:45,884 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:02:45,884 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:02:45,884 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:02:45,884 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:02:45,929 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:02:46,828 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '51382#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2022-11-19 08:02:46,829 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:02:46,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:02:46,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2022-11-19 08:02:46,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095755991] [2022-11-19 08:02:46,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:02:46,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-11-19 08:02:46,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:46,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-11-19 08:02:46,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73555, Invalid=78155, Unknown=0, NotChecked=0, Total=151710 [2022-11-19 08:02:46,861 INFO L87 Difference]: Start difference. First operand 2679 states and 2870 transitions. Second operand has 384 states, 383 states have (on average 6.976501305483029) internal successors, (2672), 383 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:02:56,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:56,938 INFO L93 Difference]: Finished difference Result 2683 states and 2874 transitions. [2022-11-19 08:02:56,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-11-19 08:02:56,939 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 6.976501305483029) internal successors, (2672), 383 states have internal predecessors, (2672), 0 states have call successors, (0), 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 1336 [2022-11-19 08:02:56,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:56,948 INFO L225 Difference]: With dead ends: 2683 [2022-11-19 08:02:56,948 INFO L226 Difference]: Without dead ends: 2682 [2022-11-19 08:02:56,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4197 GetRequests, 3809 SyntacticMatches, 0 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3432 ImplicationChecksByTransitivity, 61.0s TimeCoverageRelationStatistics Valid=73555, Invalid=78155, Unknown=0, NotChecked=0, Total=151710 [2022-11-19 08:02:56,959 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 382 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1926 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:02:56,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 1926 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-19 08:02:56,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2022-11-19 08:02:57,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 2682. [2022-11-19 08:02:57,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2680 states have (on average 1.0007462686567163) internal successors, (2682), 2681 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:02:57,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 2682 transitions. [2022-11-19 08:02:57,030 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 2682 transitions. Word has length 1336 [2022-11-19 08:02:57,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:57,033 INFO L495 AbstractCegarLoop]: Abstraction has 2682 states and 2682 transitions. [2022-11-19 08:02:57,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 6.976501305483029) internal successors, (2672), 383 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:02:57,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 2682 transitions. [2022-11-19 08:02:57,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2678 [2022-11-19 08:02:57,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:57,085 INFO L195 NwaCegarLoop]: trace histogram [383, 382, 382, 382, 382, 382, 382, 1, 1] [2022-11-19 08:02:57,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-19 08:02:57,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:02:57,295 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:02:57,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:57,295 INFO L85 PathProgramCache]: Analyzing trace with hash -156743360, now seen corresponding path program 8 times [2022-11-19 08:02:57,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:57,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818351176] [2022-11-19 08:02:57,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:57,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 510161 backedges. 0 proven. 510161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:06:43,358 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:43,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818351176] [2022-11-19 08:06:43,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818351176] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:06:43,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642429420] [2022-11-19 08:06:43,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:06:43,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:43,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:06:43,361 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:06:43,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2acbbe64-9736-42f6-88bd-9105f7ab1c2f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-19 08:06:48,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2022-11-19 08:06:48,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:06:48,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 4976 conjuncts, 384 conjunts are in the unsatisfiable core [2022-11-19 08:06:49,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:06:53,055 INFO L134 CoverageAnalysis]: Checked inductivity of 510161 backedges. 0 proven. 510161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:06:53,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:10:04,437 INFO L134 CoverageAnalysis]: Checked inductivity of 510161 backedges. 0 proven. 510161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:10:04,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642429420] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:10:04,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1323746799] [2022-11-19 08:10:04,441 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 08:10:04,442 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:10:04,442 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:10:04,442 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:10:04,443 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:10:04,492 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:10:06,315 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '74343#(and (< 0 |ULTIMATE.start_main_~z~0#1|) (<= (+ |ULTIMATE.start_main_~y~0#1| 1) 0) (not (<= |ULTIMATE.start_main_~x~0#1| 2147483646)) (<= |ULTIMATE.start_main_~z~0#1| 2147483646) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)))' at error location [2022-11-19 08:10:06,316 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:10:06,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:10:06,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [383, 383, 383] total 766 [2022-11-19 08:10:06,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63849706] [2022-11-19 08:10:06,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:10:06,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2022-11-19 08:10:06,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:10:06,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2022-11-19 08:10:06,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294550, Invalid=303752, Unknown=0, NotChecked=0, Total=598302 [2022-11-19 08:10:06,407 INFO L87 Difference]: Start difference. First operand 2682 states and 2682 transitions. Second operand has 768 states, 767 states have (on average 6.980443285528032) internal successors, (5354), 767 states have internal predecessors, (5354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)