./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a 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_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI --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 1978406b317087fc6936fcfda9d4ee773e4c87c61c4595e0ff4751e61b0b216a --- 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-5e519f3 [2022-11-03 01:48:37,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:48:37,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:48:37,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:48:37,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:48:37,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:48:37,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:48:37,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:48:37,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:48:37,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:48:37,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:48:37,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:48:37,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:48:37,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:48:37,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:48:37,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:48:37,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:48:37,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:48:37,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:48:37,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:48:37,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:48:37,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:48:37,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:48:37,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:48:37,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:48:37,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:48:37,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:48:37,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:48:37,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:48:37,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:48:37,285 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:48:37,286 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:48:37,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:48:37,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:48:37,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:48:37,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:48:37,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:48:37,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:48:37,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:48:37,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:48:37,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:48:37,297 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-03 01:48:37,330 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:48:37,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:48:37,331 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:48:37,331 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:48:37,331 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:48:37,331 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:48:37,332 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:48:37,332 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:48:37,332 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:48:37,332 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:48:37,332 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:48:37,333 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:48:37,333 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:48:37,333 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:48:37,333 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:48:37,333 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:48:37,333 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:48:37,334 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:48:37,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:48:37,335 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 01:48:37,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:48:37,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:48:37,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:48:37,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:48:37,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:48:37,336 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-03 01:48:37,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:48:37,336 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:48:37,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:48:37,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:48:37,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:48:37,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:48:37,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:48:37,337 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:48:37,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:48:37,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:48:37,338 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:48:37,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:48:37,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:48:37,338 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:48:37,338 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_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1978406b317087fc6936fcfda9d4ee773e4c87c61c4595e0ff4751e61b0b216a [2022-11-03 01:48:37,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:48:37,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:48:37,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:48:37,633 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:48:37,634 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:48:37,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d.c [2022-11-03 01:48:37,709 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/data/bd622f758/934d798f3a064f22854b56fe3f235177/FLAGd2062d823 [2022-11-03 01:48:38,134 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:48:38,135 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d.c [2022-11-03 01:48:38,141 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/data/bd622f758/934d798f3a064f22854b56fe3f235177/FLAGd2062d823 [2022-11-03 01:48:38,568 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/data/bd622f758/934d798f3a064f22854b56fe3f235177 [2022-11-03 01:48:38,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:48:38,572 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:48:38,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:48:38,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:48:38,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:48:38,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@795d5b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38, skipping insertion in model container [2022-11-03 01:48:38,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:48:38,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:48:38,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:48:38,807 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:48:38,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:48:38,845 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:48:38,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38 WrapperNode [2022-11-03 01:48:38,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:48:38,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:48:38,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:48:38,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:48:38,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,879 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2022-11-03 01:48:38,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:48:38,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:48:38,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:48:38,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:48:38,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,912 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:48:38,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:48:38,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:48:38,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:48:38,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:48:38,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:48:38,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:48:38,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:48:39,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:48:39,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:48:39,085 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:48:39,087 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:48:39,235 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:48:39,262 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:48:39,262 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:48:39,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:48:39 BoogieIcfgContainer [2022-11-03 01:48:39,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:48:39,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:48:39,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:48:39,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:48:39,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:48:38" (1/3) ... [2022-11-03 01:48:39,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c576c82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:48:39, skipping insertion in model container [2022-11-03 01:48:39,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38" (2/3) ... [2022-11-03 01:48:39,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c576c82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:48:39, skipping insertion in model container [2022-11-03 01:48:39,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:48:39" (3/3) ... [2022-11-03 01:48:39,278 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-random2d.c [2022-11-03 01:48:39,304 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:48:39,304 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-03 01:48:39,371 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:48:39,377 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;@76a997ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:48:39,378 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-03 01:48:39,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:39,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-03 01:48:39,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:39,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-03 01:48:39,389 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 01:48:39,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:39,395 INFO L85 PathProgramCache]: Analyzing trace with hash 94531, now seen corresponding path program 1 times [2022-11-03 01:48:39,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:39,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413844168] [2022-11-03 01:48:39,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:39,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:39,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:39,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413844168] [2022-11-03 01:48:39,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413844168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:39,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:39,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 01:48:39,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743835717] [2022-11-03 01:48:39,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:39,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:48:39,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:39,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:48:39,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:48:39,607 INFO L87 Difference]: Start difference. First operand has 28 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 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) [2022-11-03 01:48:39,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:39,649 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-11-03 01:48:39,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:48:39,651 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 [2022-11-03 01:48:39,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:39,661 INFO L225 Difference]: With dead ends: 33 [2022-11-03 01:48:39,661 INFO L226 Difference]: Without dead ends: 30 [2022-11-03 01:48:39,664 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 [2022-11-03 01:48:39,668 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:39,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 53 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:48:39,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-03 01:48:39,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-11-03 01:48:39,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:39,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-11-03 01:48:39,702 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 3 [2022-11-03 01:48:39,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:39,702 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-11-03 01:48:39,703 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) [2022-11-03 01:48:39,703 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-11-03 01:48:39,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 01:48:39,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:39,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 01:48:39,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:48:39,704 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 01:48:39,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:39,705 INFO L85 PathProgramCache]: Analyzing trace with hash 2930506, now seen corresponding path program 1 times [2022-11-03 01:48:39,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:39,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104527757] [2022-11-03 01:48:39,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:39,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:39,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:39,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:39,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104527757] [2022-11-03 01:48:39,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104527757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:39,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:39,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 01:48:39,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134597503] [2022-11-03 01:48:39,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:39,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:48:39,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:39,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:48:39,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:48:39,740 INFO L87 Difference]: Start difference. First operand 29 states and 34 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) [2022-11-03 01:48:39,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:39,754 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2022-11-03 01:48:39,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:48:39,754 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 [2022-11-03 01:48:39,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:39,755 INFO L225 Difference]: With dead ends: 29 [2022-11-03 01:48:39,755 INFO L226 Difference]: Without dead ends: 28 [2022-11-03 01:48:39,756 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 [2022-11-03 01:48:39,757 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 26 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 [2022-11-03 01:48:39,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 26 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:48:39,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-03 01:48:39,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-03 01:48:39,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.736842105263158) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:39,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2022-11-03 01:48:39,764 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 4 [2022-11-03 01:48:39,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:39,764 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2022-11-03 01:48:39,764 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) [2022-11-03 01:48:39,764 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2022-11-03 01:48:39,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 01:48:39,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:39,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:39,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:48:39,766 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 01:48:39,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:39,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1403406088, now seen corresponding path program 1 times [2022-11-03 01:48:39,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:39,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780857662] [2022-11-03 01:48:39,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:39,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:39,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:39,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:39,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780857662] [2022-11-03 01:48:39,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780857662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:39,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:39,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 01:48:39,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897855169] [2022-11-03 01:48:39,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:39,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:48:39,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:39,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:48:39,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:48:39,873 INFO L87 Difference]: Start difference. First operand 28 states and 33 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) [2022-11-03 01:48:39,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:39,907 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2022-11-03 01:48:39,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:48:39,908 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 [2022-11-03 01:48:39,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:39,909 INFO L225 Difference]: With dead ends: 51 [2022-11-03 01:48:39,910 INFO L226 Difference]: Without dead ends: 49 [2022-11-03 01:48:39,910 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 [2022-11-03 01:48:39,912 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 21 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:39,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:48:39,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-03 01:48:39,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2022-11-03 01:48:39,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 42 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:39,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 59 transitions. [2022-11-03 01:48:39,921 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 59 transitions. Word has length 7 [2022-11-03 01:48:39,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:39,921 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 59 transitions. [2022-11-03 01:48:39,922 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) [2022-11-03 01:48:39,922 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 59 transitions. [2022-11-03 01:48:39,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 01:48:39,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:39,923 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-03 01:48:39,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:48:39,923 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 01:48:39,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:39,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1403443247, now seen corresponding path program 1 times [2022-11-03 01:48:39,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:39,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461142454] [2022-11-03 01:48:39,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:39,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:40,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:40,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:40,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461142454] [2022-11-03 01:48:40,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461142454] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:48:40,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816723934] [2022-11-03 01:48:40,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:40,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:48:40,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:48:40,030 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:48:40,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:48:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:40,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:48:40,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:48:40,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:40,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:48:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:40,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816723934] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:48:40,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1931559585] [2022-11-03 01:48:40,245 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-03 01:48:40,245 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:48:40,249 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:48:40,255 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:48:40,255 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:48:40,443 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:48:40,527 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '309#(and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~N~0#1| 10) (< 2147483646 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2022-11-03 01:48:40,528 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:48:40,528 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:48:40,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-03 01:48:40,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115432483] [2022-11-03 01:48:40,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:48:40,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:48:40,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:40,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:48:40,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:48:40,530 INFO L87 Difference]: Start difference. First operand 43 states and 59 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2022-11-03 01:48:40,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:40,575 INFO L93 Difference]: Finished difference Result 146 states and 202 transitions. [2022-11-03 01:48:40,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:48:40,575 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 01:48:40,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:40,577 INFO L225 Difference]: With dead ends: 146 [2022-11-03 01:48:40,578 INFO L226 Difference]: Without dead ends: 145 [2022-11-03 01:48:40,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:48:40,580 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 152 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:40,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 131 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:48:40,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-03 01:48:40,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 123. [2022-11-03 01:48:40,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 114 states have (on average 1.719298245614035) internal successors, (196), 122 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:40,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 196 transitions. [2022-11-03 01:48:40,606 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 196 transitions. Word has length 7 [2022-11-03 01:48:40,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:40,606 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 196 transitions. [2022-11-03 01:48:40,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2022-11-03 01:48:40,607 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 196 transitions. [2022-11-03 01:48:40,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 01:48:40,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:40,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:40,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:48:40,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:48:40,809 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 01:48:40,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:40,809 INFO L85 PathProgramCache]: Analyzing trace with hash 555915823, now seen corresponding path program 1 times [2022-11-03 01:48:40,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:40,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987834597] [2022-11-03 01:48:40,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:40,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:40,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:40,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:40,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987834597] [2022-11-03 01:48:40,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987834597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:40,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:40,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 01:48:40,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399316898] [2022-11-03 01:48:40,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:40,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:48:40,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:40,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:48:40,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:48:40,896 INFO L87 Difference]: Start difference. First operand 123 states and 196 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:40,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:40,939 INFO L93 Difference]: Finished difference Result 212 states and 337 transitions. [2022-11-03 01:48:40,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:48:40,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 01:48:40,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:40,943 INFO L225 Difference]: With dead ends: 212 [2022-11-03 01:48:40,946 INFO L226 Difference]: Without dead ends: 210 [2022-11-03 01:48:40,947 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 [2022-11-03 01:48:40,948 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 20 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:40,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:48:40,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-03 01:48:40,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 205. [2022-11-03 01:48:40,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 196 states have (on average 1.663265306122449) internal successors, (326), 204 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:40,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 326 transitions. [2022-11-03 01:48:40,987 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 326 transitions. Word has length 8 [2022-11-03 01:48:40,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:40,988 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 326 transitions. [2022-11-03 01:48:40,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:40,989 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 326 transitions. [2022-11-03 01:48:40,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 01:48:40,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:40,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:40,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:48:40,990 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 01:48:40,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:40,991 INFO L85 PathProgramCache]: Analyzing trace with hash 53713073, now seen corresponding path program 1 times [2022-11-03 01:48:40,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:40,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570058662] [2022-11-03 01:48:40,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:40,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:41,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:41,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:41,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570058662] [2022-11-03 01:48:41,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570058662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:41,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:41,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 01:48:41,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116901014] [2022-11-03 01:48:41,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:41,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:48:41,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:41,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:48:41,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:48:41,060 INFO L87 Difference]: Start difference. First operand 205 states and 326 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:41,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:41,117 INFO L93 Difference]: Finished difference Result 345 states and 546 transitions. [2022-11-03 01:48:41,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:48:41,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-03 01:48:41,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:41,122 INFO L225 Difference]: With dead ends: 345 [2022-11-03 01:48:41,127 INFO L226 Difference]: Without dead ends: 343 [2022-11-03 01:48:41,127 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 [2022-11-03 01:48:41,128 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 19 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:41,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:48:41,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-11-03 01:48:41,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 330. [2022-11-03 01:48:41,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 321 states have (on average 1.5763239875389408) internal successors, (506), 329 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:41,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 506 transitions. [2022-11-03 01:48:41,191 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 506 transitions. Word has length 9 [2022-11-03 01:48:41,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:41,192 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 506 transitions. [2022-11-03 01:48:41,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:41,193 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 506 transitions. [2022-11-03 01:48:41,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 01:48:41,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:41,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:41,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:48:41,196 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 01:48:41,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:41,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1665105336, now seen corresponding path program 1 times [2022-11-03 01:48:41,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:41,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645154804] [2022-11-03 01:48:41,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:41,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:41,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:41,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:41,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645154804] [2022-11-03 01:48:41,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645154804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:41,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:41,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 01:48:41,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398694025] [2022-11-03 01:48:41,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:41,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:48:41,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:41,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:48:41,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:48:41,261 INFO L87 Difference]: Start difference. First operand 330 states and 506 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:41,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:41,308 INFO L93 Difference]: Finished difference Result 549 states and 840 transitions. [2022-11-03 01:48:41,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:48:41,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-03 01:48:41,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:41,314 INFO L225 Difference]: With dead ends: 549 [2022-11-03 01:48:41,314 INFO L226 Difference]: Without dead ends: 547 [2022-11-03 01:48:41,315 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 [2022-11-03 01:48:41,318 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:41,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:48:41,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-11-03 01:48:41,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 542. [2022-11-03 01:48:41,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 533 states have (on average 1.5159474671669793) internal successors, (808), 541 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:41,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 808 transitions. [2022-11-03 01:48:41,372 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 808 transitions. Word has length 10 [2022-11-03 01:48:41,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:41,373 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 808 transitions. [2022-11-03 01:48:41,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:41,373 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 808 transitions. [2022-11-03 01:48:41,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:48:41,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:41,376 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-03 01:48:41,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:48:41,376 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 01:48:41,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:41,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1107964330, now seen corresponding path program 1 times [2022-11-03 01:48:41,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:41,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79467721] [2022-11-03 01:48:41,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:41,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:41,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:41,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:41,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79467721] [2022-11-03 01:48:41,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79467721] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:48:41,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682937038] [2022-11-03 01:48:41,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:41,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:48:41,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:48:41,482 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:48:41,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:48:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:41,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:48:41,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:48:41,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:41,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:48:41,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:41,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682937038] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:48:41,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1860894573] [2022-11-03 01:48:41,620 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 01:48:41,621 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:48:41,622 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:48:41,622 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:48:41,622 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:48:41,898 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:48:42,231 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3061#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| 0) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~N~0#1| 10))' at error location [2022-11-03 01:48:42,231 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:48:42,232 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:48:42,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-03 01:48:42,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223077682] [2022-11-03 01:48:42,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:48:42,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:48:42,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:42,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:48:42,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:48:42,233 INFO L87 Difference]: Start difference. First operand 542 states and 808 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:42,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:42,305 INFO L93 Difference]: Finished difference Result 1046 states and 1607 transitions. [2022-11-03 01:48:42,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:48:42,306 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 01:48:42,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:42,310 INFO L225 Difference]: With dead ends: 1046 [2022-11-03 01:48:42,311 INFO L226 Difference]: Without dead ends: 1044 [2022-11-03 01:48:42,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:48:42,312 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 122 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:42,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 112 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:48:42,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2022-11-03 01:48:42,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 903. [2022-11-03 01:48:42,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 894 states have (on average 1.5279642058165548) internal successors, (1366), 902 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:42,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1366 transitions. [2022-11-03 01:48:42,345 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1366 transitions. Word has length 14 [2022-11-03 01:48:42,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:42,345 INFO L495 AbstractCegarLoop]: Abstraction has 903 states and 1366 transitions. [2022-11-03 01:48:42,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:42,345 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1366 transitions. [2022-11-03 01:48:42,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 01:48:42,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:42,347 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:42,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:48:42,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-03 01:48:42,570 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 01:48:42,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:42,571 INFO L85 PathProgramCache]: Analyzing trace with hash 953294341, now seen corresponding path program 1 times [2022-11-03 01:48:42,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:42,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498769137] [2022-11-03 01:48:42,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:42,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:42,611 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:42,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:42,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498769137] [2022-11-03 01:48:42,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498769137] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:48:42,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430539857] [2022-11-03 01:48:42,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:42,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:48:42,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:48:42,613 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:48:42,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:48:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:42,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:48:42,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:48:42,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:42,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:48:42,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:42,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430539857] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:48:42,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1800104018] [2022-11-03 01:48:42,745 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-03 01:48:42,745 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:48:42,745 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:48:42,746 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:48:42,746 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:48:42,870 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:48:43,143 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5277#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~N~0#1| 10) (< (+ 2147483649 |ULTIMATE.start_main_~x~0#1|) 0))' at error location [2022-11-03 01:48:43,143 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:48:43,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:48:43,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-03 01:48:43,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000432392] [2022-11-03 01:48:43,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:48:43,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:48:43,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:43,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:48:43,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-11-03 01:48:43,145 INFO L87 Difference]: Start difference. First operand 903 states and 1366 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:43,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:43,202 INFO L93 Difference]: Finished difference Result 1364 states and 2105 transitions. [2022-11-03 01:48:43,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:48:43,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-03 01:48:43,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:43,207 INFO L225 Difference]: With dead ends: 1364 [2022-11-03 01:48:43,207 INFO L226 Difference]: Without dead ends: 1362 [2022-11-03 01:48:43,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-11-03 01:48:43,209 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 84 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:43,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 66 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:48:43,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2022-11-03 01:48:43,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1060. [2022-11-03 01:48:43,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1052 states have (on average 1.518060836501901) internal successors, (1597), 1059 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:43,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1597 transitions. [2022-11-03 01:48:43,245 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1597 transitions. Word has length 16 [2022-11-03 01:48:43,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:43,245 INFO L495 AbstractCegarLoop]: Abstraction has 1060 states and 1597 transitions. [2022-11-03 01:48:43,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:43,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1597 transitions. [2022-11-03 01:48:43,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 01:48:43,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:43,247 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-03 01:48:43,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:48:43,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-03 01:48:43,470 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 01:48:43,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:43,471 INFO L85 PathProgramCache]: Analyzing trace with hash -2065182968, now seen corresponding path program 1 times [2022-11-03 01:48:43,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:43,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273726127] [2022-11-03 01:48:43,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:43,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:43,514 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:43,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:43,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273726127] [2022-11-03 01:48:43,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273726127] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:48:43,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751075127] [2022-11-03 01:48:43,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:43,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:48:43,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:48:43,517 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:48:43,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 01:48:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:43,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:48:43,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:48:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:43,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:48:43,624 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:43,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751075127] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:48:43,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1271409893] [2022-11-03 01:48:43,628 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-03 01:48:43,628 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:48:43,629 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:48:43,629 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:48:43,629 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:48:43,749 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:48:44,075 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8021#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~N~0#1| 10) (< 2147483646 |ULTIMATE.start_main_~y~0#1|) (= 2 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2022-11-03 01:48:44,076 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:48:44,076 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:48:44,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-03 01:48:44,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755003717] [2022-11-03 01:48:44,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:48:44,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:48:44,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:44,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:48:44,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:48:44,077 INFO L87 Difference]: Start difference. First operand 1060 states and 1597 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:44,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:44,171 INFO L93 Difference]: Finished difference Result 2461 states and 3871 transitions. [2022-11-03 01:48:44,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:48:44,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-03 01:48:44,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:44,180 INFO L225 Difference]: With dead ends: 2461 [2022-11-03 01:48:44,180 INFO L226 Difference]: Without dead ends: 2459 [2022-11-03 01:48:44,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:48:44,206 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 102 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:44,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 107 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:48:44,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2459 states. [2022-11-03 01:48:44,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2459 to 2129. [2022-11-03 01:48:44,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 2121 states have (on average 1.5223950966525224) internal successors, (3229), 2128 states have internal predecessors, (3229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:44,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 3229 transitions. [2022-11-03 01:48:44,277 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 3229 transitions. Word has length 18 [2022-11-03 01:48:44,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:44,277 INFO L495 AbstractCegarLoop]: Abstraction has 2129 states and 3229 transitions. [2022-11-03 01:48:44,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:44,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 3229 transitions. [2022-11-03 01:48:44,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 01:48:44,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:44,280 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1] [2022-11-03 01:48:44,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 01:48:44,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 01:48:44,494 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 01:48:44,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:44,495 INFO L85 PathProgramCache]: Analyzing trace with hash -492631821, now seen corresponding path program 2 times [2022-11-03 01:48:44,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:44,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957489377] [2022-11-03 01:48:44,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:44,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:44,529 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 01:48:44,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:44,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957489377] [2022-11-03 01:48:44,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957489377] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:48:44,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034449610] [2022-11-03 01:48:44,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:48:44,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:48:44,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:48:44,534 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:48:44,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 01:48:44,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-03 01:48:44,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:48:44,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:48:44,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:48:44,590 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 01:48:44,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:48:44,630 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 01:48:44,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034449610] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:48:44,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1013364906] [2022-11-03 01:48:44,633 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-03 01:48:44,633 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:48:44,633 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:48:44,633 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:48:44,634 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:48:44,698 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:48:44,774 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13102#(and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~N~0#1| 10) (< 2147483646 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2022-11-03 01:48:44,774 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:48:44,774 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:48:44,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-03 01:48:44,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620014479] [2022-11-03 01:48:44,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:48:44,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:48:44,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:44,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:48:44,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:48:44,776 INFO L87 Difference]: Start difference. First operand 2129 states and 3229 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2022-11-03 01:48:44,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:44,829 INFO L93 Difference]: Finished difference Result 2129 states and 3229 transitions. [2022-11-03 01:48:44,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:48:44,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-03 01:48:44,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:44,836 INFO L225 Difference]: With dead ends: 2129 [2022-11-03 01:48:44,837 INFO L226 Difference]: Without dead ends: 2128 [2022-11-03 01:48:44,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:48:44,839 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 51 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:44,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 50 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:48:44,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2022-11-03 01:48:44,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 1798. [2022-11-03 01:48:44,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1791 states have (on average 1.4874371859296482) internal successors, (2664), 1797 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:44,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2664 transitions. [2022-11-03 01:48:44,941 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2664 transitions. Word has length 19 [2022-11-03 01:48:44,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:44,942 INFO L495 AbstractCegarLoop]: Abstraction has 1798 states and 2664 transitions. [2022-11-03 01:48:44,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2022-11-03 01:48:44,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2664 transitions. [2022-11-03 01:48:44,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 01:48:44,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:44,944 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:44,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 01:48:45,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:48:45,158 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 01:48:45,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:45,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1112024197, now seen corresponding path program 1 times [2022-11-03 01:48:45,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:45,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818039198] [2022-11-03 01:48:45,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:45,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:45,194 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:45,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:45,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818039198] [2022-11-03 01:48:45,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818039198] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:48:45,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948996925] [2022-11-03 01:48:45,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:45,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:48:45,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:48:45,201 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:48:45,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 01:48:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:45,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:48:45,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:48:45,275 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:45,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:48:45,322 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:45,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948996925] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:48:45,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2133562515] [2022-11-03 01:48:45,325 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-03 01:48:45,325 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:48:45,326 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:48:45,326 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:48:45,326 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:48:45,426 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:48:45,749 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17463#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (< (+ 2147483649 |ULTIMATE.start_main_~y~0#1|) 0) (= |ULTIMATE.start_main_~N~0#1| 10) (= 2 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2022-11-03 01:48:45,749 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:48:45,749 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:48:45,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-03 01:48:45,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984918041] [2022-11-03 01:48:45,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:48:45,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:48:45,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:45,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:48:45,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:48:45,751 INFO L87 Difference]: Start difference. First operand 1798 states and 2664 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:45,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:45,855 INFO L93 Difference]: Finished difference Result 3110 states and 4688 transitions. [2022-11-03 01:48:45,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:48:45,856 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-03 01:48:45,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:45,868 INFO L225 Difference]: With dead ends: 3110 [2022-11-03 01:48:45,868 INFO L226 Difference]: Without dead ends: 3108 [2022-11-03 01:48:45,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:48:45,871 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 78 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:45,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 60 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:48:45,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2022-11-03 01:48:45,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 2295. [2022-11-03 01:48:45,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2295 states, 2289 states have (on average 1.4600262123197902) internal successors, (3342), 2294 states have internal predecessors, (3342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:45,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 3342 transitions. [2022-11-03 01:48:45,952 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 3342 transitions. Word has length 20 [2022-11-03 01:48:45,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:45,952 INFO L495 AbstractCegarLoop]: Abstraction has 2295 states and 3342 transitions. [2022-11-03 01:48:45,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:45,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 3342 transitions. [2022-11-03 01:48:45,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-03 01:48:45,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:45,953 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1] [2022-11-03 01:48:45,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 01:48:46,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:48:46,172 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 01:48:46,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:46,173 INFO L85 PathProgramCache]: Analyzing trace with hash -923998945, now seen corresponding path program 1 times [2022-11-03 01:48:46,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:46,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727991258] [2022-11-03 01:48:46,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:46,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:46,227 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:46,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:46,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727991258] [2022-11-03 01:48:46,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727991258] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:48:46,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345582387] [2022-11-03 01:48:46,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:46,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:48:46,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:48:46,230 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:48:46,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 01:48:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:46,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:48:46,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:48:46,322 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:46,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:48:46,377 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:46,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345582387] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:48:46,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1189439793] [2022-11-03 01:48:46,380 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-03 01:48:46,380 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:48:46,381 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:48:46,381 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:48:46,381 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:48:46,467 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:48:46,722 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '23420#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~N~0#1| 10) (= |ULTIMATE.start_main_~r~0#1| 1) (< (+ 2147483647 |ULTIMATE.start_main_~x~0#1|) 0))' at error location [2022-11-03 01:48:46,722 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:48:46,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:48:46,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-03 01:48:46,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124240608] [2022-11-03 01:48:46,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:48:46,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:48:46,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:46,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:48:46,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:48:46,724 INFO L87 Difference]: Start difference. First operand 2295 states and 3342 transitions. Second operand has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:46,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:46,892 INFO L93 Difference]: Finished difference Result 6600 states and 9697 transitions. [2022-11-03 01:48:46,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:48:46,893 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-03 01:48:46,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:46,915 INFO L225 Difference]: With dead ends: 6600 [2022-11-03 01:48:46,915 INFO L226 Difference]: Without dead ends: 6599 [2022-11-03 01:48:46,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:48:46,920 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 156 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:46,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 141 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:48:46,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6599 states. [2022-11-03 01:48:47,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6599 to 5400. [2022-11-03 01:48:47,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5400 states, 5394 states have (on average 1.4556915090841676) internal successors, (7852), 5399 states have internal predecessors, (7852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:47,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5400 states to 5400 states and 7852 transitions. [2022-11-03 01:48:47,115 INFO L78 Accepts]: Start accepts. Automaton has 5400 states and 7852 transitions. Word has length 25 [2022-11-03 01:48:47,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:47,115 INFO L495 AbstractCegarLoop]: Abstraction has 5400 states and 7852 transitions. [2022-11-03 01:48:47,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:47,116 INFO L276 IsEmpty]: Start isEmpty. Operand 5400 states and 7852 transitions. [2022-11-03 01:48:47,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 01:48:47,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:47,117 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1] [2022-11-03 01:48:47,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 01:48:47,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-03 01:48:47,338 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 01:48:47,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:47,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1295272154, now seen corresponding path program 1 times [2022-11-03 01:48:47,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:47,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755704067] [2022-11-03 01:48:47,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:47,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:47,422 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:47,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:47,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755704067] [2022-11-03 01:48:47,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755704067] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:48:47,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631050906] [2022-11-03 01:48:47,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:47,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:48:47,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:48:47,425 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:48:47,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 01:48:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:47,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:48:47,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:48:47,522 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:47,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:48:47,583 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:47,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631050906] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:48:47,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [497729212] [2022-11-03 01:48:47,586 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-03 01:48:47,586 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:48:47,586 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:48:47,587 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:48:47,587 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:48:47,670 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:48:48,119 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '36487#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~N~0#1| 10) (= |ULTIMATE.start_main_~x~0#1| 0) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (= 3 |ULTIMATE.start_main_~r~0#1|))' at error location [2022-11-03 01:48:48,119 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:48:48,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:48:48,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-03 01:48:48,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043840863] [2022-11-03 01:48:48,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:48:48,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:48:48,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:48,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:48:48,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:48:48,122 INFO L87 Difference]: Start difference. First operand 5400 states and 7852 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 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) [2022-11-03 01:48:48,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:48,461 INFO L93 Difference]: Finished difference Result 15528 states and 22801 transitions. [2022-11-03 01:48:48,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:48:48,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 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 [2022-11-03 01:48:48,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:48,506 INFO L225 Difference]: With dead ends: 15528 [2022-11-03 01:48:48,506 INFO L226 Difference]: Without dead ends: 15527 [2022-11-03 01:48:48,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 73 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:48:48,515 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 140 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:48,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 141 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:48:48,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15527 states. [2022-11-03 01:48:48,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15527 to 12717. [2022-11-03 01:48:48,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12717 states, 12711 states have (on average 1.4511840138462748) internal successors, (18446), 12716 states have internal predecessors, (18446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:49,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12717 states to 12717 states and 18446 transitions. [2022-11-03 01:48:49,039 INFO L78 Accepts]: Start accepts. Automaton has 12717 states and 18446 transitions. Word has length 31 [2022-11-03 01:48:49,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:49,039 INFO L495 AbstractCegarLoop]: Abstraction has 12717 states and 18446 transitions. [2022-11-03 01:48:49,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 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) [2022-11-03 01:48:49,040 INFO L276 IsEmpty]: Start isEmpty. Operand 12717 states and 18446 transitions. [2022-11-03 01:48:49,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 01:48:49,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:49,042 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1] [2022-11-03 01:48:49,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 01:48:49,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-03 01:48:49,258 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 01:48:49,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:49,259 INFO L85 PathProgramCache]: Analyzing trace with hash 188182408, now seen corresponding path program 2 times [2022-11-03 01:48:49,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:49,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146826217] [2022-11-03 01:48:49,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:49,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:49,326 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:49,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:49,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146826217] [2022-11-03 01:48:49,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146826217] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:48:49,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129025854] [2022-11-03 01:48:49,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:48:49,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:48:49,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:48:49,328 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:48:49,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 01:48:49,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-03 01:48:49,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:48:49,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:48:49,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:48:49,438 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:49,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:48:49,525 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:49,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129025854] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:48:49,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [279837645] [2022-11-03 01:48:49,527 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 01:48:49,527 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:48:49,528 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:48:49,528 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:48:49,528 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:48:49,648 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:48:50,006 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '67034#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| 0) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~N~0#1| 10))' at error location [2022-11-03 01:48:50,007 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:48:50,007 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:48:50,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-03 01:48:50,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090263010] [2022-11-03 01:48:50,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:48:50,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:48:50,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:50,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:48:50,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:48:50,010 INFO L87 Difference]: Start difference. First operand 12717 states and 18446 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:50,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:50,927 INFO L93 Difference]: Finished difference Result 43312 states and 64319 transitions. [2022-11-03 01:48:50,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:48:50,927 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 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 35 [2022-11-03 01:48:50,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:51,039 INFO L225 Difference]: With dead ends: 43312 [2022-11-03 01:48:51,040 INFO L226 Difference]: Without dead ends: 43310 [2022-11-03 01:48:51,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:48:51,061 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 325 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:51,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 222 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:48:51,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43310 states. [2022-11-03 01:48:52,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43310 to 27375. [2022-11-03 01:48:52,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27375 states, 27369 states have (on average 1.4275274946106908) internal successors, (39070), 27374 states have internal predecessors, (39070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:52,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27375 states to 27375 states and 39070 transitions. [2022-11-03 01:48:52,321 INFO L78 Accepts]: Start accepts. Automaton has 27375 states and 39070 transitions. Word has length 35 [2022-11-03 01:48:52,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:52,321 INFO L495 AbstractCegarLoop]: Abstraction has 27375 states and 39070 transitions. [2022-11-03 01:48:52,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:52,322 INFO L276 IsEmpty]: Start isEmpty. Operand 27375 states and 39070 transitions. [2022-11-03 01:48:52,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-03 01:48:52,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:52,324 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1] [2022-11-03 01:48:52,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 01:48:52,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-03 01:48:52,540 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 01:48:52,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:52,540 INFO L85 PathProgramCache]: Analyzing trace with hash -14465935, now seen corresponding path program 2 times [2022-11-03 01:48:52,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:52,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462765885] [2022-11-03 01:48:52,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:52,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:52,646 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:52,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:52,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462765885] [2022-11-03 01:48:52,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462765885] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:48:52,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273145135] [2022-11-03 01:48:52,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:48:52,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:48:52,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:48:52,648 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:48:52,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 01:48:52,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-03 01:48:52,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:48:52,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:48:52,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:48:52,761 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:52,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:48:52,860 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:52,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273145135] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:48:52,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [5574590] [2022-11-03 01:48:52,863 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-03 01:48:52,864 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:48:52,864 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:48:52,864 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:48:52,864 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:48:52,936 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:48:53,382 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '143150#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~N~0#1| 10) (< 2147483646 |ULTIMATE.start_main_~y~0#1|) (= 2 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2022-11-03 01:48:53,382 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:48:53,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:48:53,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-03 01:48:53,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353988765] [2022-11-03 01:48:53,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:48:53,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:48:53,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:53,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:48:53,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2022-11-03 01:48:53,384 INFO L87 Difference]: Start difference. First operand 27375 states and 39070 transitions. Second operand has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:54,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:54,777 INFO L93 Difference]: Finished difference Result 93112 states and 136145 transitions. [2022-11-03 01:48:54,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:48:54,778 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 0 states have call successors, (0), 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 45 [2022-11-03 01:48:54,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:54,998 INFO L225 Difference]: With dead ends: 93112 [2022-11-03 01:48:54,998 INFO L226 Difference]: Without dead ends: 93110 [2022-11-03 01:48:55,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2022-11-03 01:48:55,022 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 319 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:55,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 222 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:48:55,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93110 states. [2022-11-03 01:48:56,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93110 to 58897. [2022-11-03 01:48:56,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58897 states, 58891 states have (on average 1.4050703842692431) internal successors, (82746), 58896 states have internal predecessors, (82746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:57,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58897 states to 58897 states and 82746 transitions. [2022-11-03 01:48:57,232 INFO L78 Accepts]: Start accepts. Automaton has 58897 states and 82746 transitions. Word has length 45 [2022-11-03 01:48:57,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:57,233 INFO L495 AbstractCegarLoop]: Abstraction has 58897 states and 82746 transitions. [2022-11-03 01:48:57,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:57,234 INFO L276 IsEmpty]: Start isEmpty. Operand 58897 states and 82746 transitions. [2022-11-03 01:48:57,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-03 01:48:57,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:57,237 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 1, 1] [2022-11-03 01:48:57,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 01:48:57,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-03 01:48:57,462 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 01:48:57,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:57,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1069468473, now seen corresponding path program 2 times [2022-11-03 01:48:57,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:57,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706099793] [2022-11-03 01:48:57,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:57,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:57,629 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:57,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:57,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706099793] [2022-11-03 01:48:57,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706099793] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:48:57,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676192104] [2022-11-03 01:48:57,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:48:57,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:48:57,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:48:57,630 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:48:57,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 01:48:57,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-03 01:48:57,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:48:57,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:48:57,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:48:57,791 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:57,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:48:57,978 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:57,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676192104] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:48:57,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [531231864] [2022-11-03 01:48:57,980 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-03 01:48:57,980 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:48:57,981 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:48:57,981 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:48:57,981 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:48:58,047 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:48:58,304 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '306311#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~N~0#1| 10) (= |ULTIMATE.start_main_~r~0#1| 1) (< (+ 2147483647 |ULTIMATE.start_main_~x~0#1|) 0))' at error location [2022-11-03 01:48:58,304 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:48:58,304 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:48:58,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-03 01:48:58,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200601146] [2022-11-03 01:48:58,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:48:58,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 01:48:58,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:58,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 01:48:58,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2022-11-03 01:48:58,306 INFO L87 Difference]: Start difference. First operand 58897 states and 82746 transitions. Second operand has 16 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:49:01,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:01,686 INFO L93 Difference]: Finished difference Result 207476 states and 294184 transitions. [2022-11-03 01:49:01,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 01:49:01,686 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 0 states have call successors, (0), 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 57 [2022-11-03 01:49:01,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:02,235 INFO L225 Difference]: With dead ends: 207476 [2022-11-03 01:49:02,236 INFO L226 Difference]: Without dead ends: 207475 [2022-11-03 01:49:02,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2022-11-03 01:49:02,329 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 674 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:02,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 301 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:49:02,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207475 states. [2022-11-03 01:49:06,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207475 to 115067. [2022-11-03 01:49:06,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115067 states, 115061 states have (on average 1.3967895290324264) internal successors, (160716), 115066 states have internal predecessors, (160716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:49:07,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115067 states to 115067 states and 160716 transitions. [2022-11-03 01:49:07,209 INFO L78 Accepts]: Start accepts. Automaton has 115067 states and 160716 transitions. Word has length 57 [2022-11-03 01:49:07,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:07,209 INFO L495 AbstractCegarLoop]: Abstraction has 115067 states and 160716 transitions. [2022-11-03 01:49:07,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:49:07,210 INFO L276 IsEmpty]: Start isEmpty. Operand 115067 states and 160716 transitions. [2022-11-03 01:49:07,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 01:49:07,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:07,218 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1] [2022-11-03 01:49:07,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-03 01:49:07,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-03 01:49:07,422 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 01:49:07,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:07,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1605996634, now seen corresponding path program 2 times [2022-11-03 01:49:07,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:49:07,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330479103] [2022-11-03 01:49:07,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:07,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:49:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:07,613 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:49:07,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:49:07,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330479103] [2022-11-03 01:49:07,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330479103] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:49:07,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361204496] [2022-11-03 01:49:07,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:49:07,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:49:07,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:49:07,616 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:49:07,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-03 01:49:07,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-03 01:49:07,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:49:07,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:49:07,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:49:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:49:07,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:49:07,973 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:49:07,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361204496] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:49:07,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [527046757] [2022-11-03 01:49:07,976 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-03 01:49:07,976 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:49:07,976 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:49:07,976 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:49:07,977 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:49:08,066 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:49:08,607 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '651853#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~N~0#1| 10) (= |ULTIMATE.start_main_~x~0#1| 0) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (= 3 |ULTIMATE.start_main_~r~0#1|))' at error location [2022-11-03 01:49:08,607 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:49:08,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:49:08,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-03 01:49:08,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808582807] [2022-11-03 01:49:08,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:49:08,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 01:49:08,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:49:08,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 01:49:08,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2022-11-03 01:49:08,610 INFO L87 Difference]: Start difference. First operand 115067 states and 160716 transitions. Second operand has 16 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:49:15,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:15,616 INFO L93 Difference]: Finished difference Result 405128 states and 571168 transitions. [2022-11-03 01:49:15,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 01:49:15,616 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 0 states have call successors, (0), 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 71 [2022-11-03 01:49:15,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:16,285 INFO L225 Difference]: With dead ends: 405128 [2022-11-03 01:49:16,285 INFO L226 Difference]: Without dead ends: 405127 [2022-11-03 01:49:16,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 181 SyntacticMatches, 14 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2022-11-03 01:49:16,359 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 320 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:16,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 301 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:49:16,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405127 states. [2022-11-03 01:49:24,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405127 to 224757. [2022-11-03 01:49:24,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224757 states, 224751 states have (on average 1.3887635650119465) internal successors, (312126), 224756 states have internal predecessors, (312126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:49:25,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224757 states to 224757 states and 312126 transitions. [2022-11-03 01:49:25,215 INFO L78 Accepts]: Start accepts. Automaton has 224757 states and 312126 transitions. Word has length 71 [2022-11-03 01:49:25,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:25,216 INFO L495 AbstractCegarLoop]: Abstraction has 224757 states and 312126 transitions. [2022-11-03 01:49:25,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:49:25,216 INFO L276 IsEmpty]: Start isEmpty. Operand 224757 states and 312126 transitions. [2022-11-03 01:49:25,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-03 01:49:25,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:25,252 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 1, 1] [2022-11-03 01:49:25,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-03 01:49:25,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-03 01:49:25,453 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 01:49:25,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:25,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1165827000, now seen corresponding path program 3 times [2022-11-03 01:49:25,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:49:25,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730790511] [2022-11-03 01:49:25,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:25,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:49:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:25,650 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:49:25,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:49:25,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730790511] [2022-11-03 01:49:25,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730790511] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:49:25,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240387586] [2022-11-03 01:49:25,651 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 01:49:25,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:49:25,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:49:25,652 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:49:25,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-03 01:49:25,707 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 01:49:25,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:49:25,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 01:49:25,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:49:26,138 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 375 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:49:26,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:49:26,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240387586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:49:26,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:49:26,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 23 [2022-11-03 01:49:26,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028510251] [2022-11-03 01:49:26,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:49:26,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 01:49:26,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:49:26,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 01:49:26,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-11-03 01:49:26,140 INFO L87 Difference]: Start difference. First operand 224757 states and 312126 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:49:28,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:28,484 INFO L93 Difference]: Finished difference Result 243071 states and 336740 transitions. [2022-11-03 01:49:28,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:49:28,484 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-11-03 01:49:28,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:28,485 INFO L225 Difference]: With dead ends: 243071 [2022-11-03 01:49:28,485 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 01:49:28,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-11-03 01:49:28,591 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 144 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:28,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 468 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:49:28,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 01:49:28,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 01:49:28,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:49:28,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 01:49:28,593 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2022-11-03 01:49:28,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:28,594 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 01:49:28,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:49:28,594 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 01:49:28,594 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 01:49:28,597 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2022-11-03 01:49:28,598 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-03 01:49:28,598 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-03 01:49:28,599 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-03 01:49:28,599 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-03 01:49:28,599 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-03 01:49:28,599 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-03 01:49:28,600 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-03 01:49:28,600 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-03 01:49:28,600 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2022-11-03 01:49:28,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-03 01:49:28,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867bfdd5-a67f-4725-a2c8-6f1458fc021a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:49:28,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.