./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/xcsp/AllInterval-006.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/xcsp/AllInterval-006.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5db620ad631bbb2b4f2f184a6694f3d470d0214c96a5cb4b6c65ad330c77841f --- 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-2329fc7 [2022-12-14 05:18:25,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:18:25,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:18:25,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:18:25,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:18:25,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:18:25,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:18:25,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:18:25,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:18:25,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:18:25,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:18:25,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:18:25,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:18:25,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:18:25,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:18:25,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:18:25,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:18:25,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:18:25,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:18:25,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:18:25,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:18:25,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:18:25,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:18:25,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:18:25,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:18:25,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:18:25,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:18:25,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:18:25,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:18:25,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:18:25,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:18:25,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:18:25,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:18:25,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:18:25,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:18:25,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:18:25,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:18:25,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:18:25,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:18:25,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:18:25,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:18:25,629 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 05:18:25,642 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:18:25,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:18:25,648 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:18:25,648 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:18:25,649 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:18:25,649 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:18:25,649 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:18:25,649 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:18:25,649 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:18:25,649 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:18:25,649 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:18:25,650 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:18:25,650 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:18:25,650 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:18:25,650 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:18:25,650 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:18:25,650 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:18:25,650 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:18:25,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:18:25,651 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:18:25,651 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 05:18:25,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:18:25,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:18:25,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:18:25,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:18:25,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:18:25,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:18:25,652 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 05:18:25,652 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:18:25,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:18:25,652 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:18:25,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:18:25,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:18:25,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:18:25,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:18:25,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:18:25,653 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:18:25,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:18:25,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:18:25,653 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:18:25,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:18:25,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:18:25,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:18:25,654 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_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5db620ad631bbb2b4f2f184a6694f3d470d0214c96a5cb4b6c65ad330c77841f [2022-12-14 05:18:25,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:18:25,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:18:25,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:18:25,832 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:18:25,832 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:18:25,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/xcsp/AllInterval-006.c [2022-12-14 05:18:28,522 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:18:28,689 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:18:28,690 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/sv-benchmarks/c/xcsp/AllInterval-006.c [2022-12-14 05:18:28,694 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/data/157fd6ac5/0595162c95264e71b7d51ddad6525913/FLAG6a1d91a18 [2022-12-14 05:18:28,704 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/data/157fd6ac5/0595162c95264e71b7d51ddad6525913 [2022-12-14 05:18:28,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:18:28,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:18:28,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:18:28,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:18:28,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:18:28,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:18:28" (1/1) ... [2022-12-14 05:18:28,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e42cf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:18:28, skipping insertion in model container [2022-12-14 05:18:28,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:18:28" (1/1) ... [2022-12-14 05:18:28,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:18:28,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:18:28,869 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/sv-benchmarks/c/xcsp/AllInterval-006.c[3098,3111] [2022-12-14 05:18:28,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:18:28,878 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:18:28,897 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/sv-benchmarks/c/xcsp/AllInterval-006.c[3098,3111] [2022-12-14 05:18:28,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:18:28,907 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:18:28,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:18:28 WrapperNode [2022-12-14 05:18:28,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:18:28,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:18:28,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:18:28,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:18:28,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:18:28" (1/1) ... [2022-12-14 05:18:28,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:18:28" (1/1) ... [2022-12-14 05:18:28,937 INFO L138 Inliner]: procedures = 13, calls = 59, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 164 [2022-12-14 05:18:28,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:18:28,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:18:28,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:18:28,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:18:28,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:18:28" (1/1) ... [2022-12-14 05:18:28,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:18:28" (1/1) ... [2022-12-14 05:18:28,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:18:28" (1/1) ... [2022-12-14 05:18:28,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:18:28" (1/1) ... [2022-12-14 05:18:28,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:18:28" (1/1) ... [2022-12-14 05:18:28,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:18:28" (1/1) ... [2022-12-14 05:18:28,953 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:18:28" (1/1) ... [2022-12-14 05:18:28,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:18:28" (1/1) ... [2022-12-14 05:18:28,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:18:28,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:18:28,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:18:28,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:18:28,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:18:28" (1/1) ... [2022-12-14 05:18:28,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:18:28,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:18:28,981 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:18:28,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:18:29,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:18:29,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:18:29,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:18:29,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:18:29,007 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2022-12-14 05:18:29,008 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2022-12-14 05:18:29,067 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:18:29,069 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:18:29,276 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:18:29,302 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:18:29,302 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 05:18:29,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:18:29 BoogieIcfgContainer [2022-12-14 05:18:29,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:18:29,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:18:29,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:18:29,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:18:29,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:18:28" (1/3) ... [2022-12-14 05:18:29,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df8e2d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:18:29, skipping insertion in model container [2022-12-14 05:18:29,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:18:28" (2/3) ... [2022-12-14 05:18:29,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df8e2d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:18:29, skipping insertion in model container [2022-12-14 05:18:29,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:18:29" (3/3) ... [2022-12-14 05:18:29,315 INFO L112 eAbstractionObserver]: Analyzing ICFG AllInterval-006.c [2022-12-14 05:18:29,336 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:18:29,336 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-12-14 05:18:29,391 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:18:29,397 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;@438248d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:18:29,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-12-14 05:18:29,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 45 states have (on average 1.5555555555555556) internal successors, (70), 65 states have internal predecessors, (70), 52 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-12-14 05:18:29,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-12-14 05:18:29,414 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:18:29,415 INFO L195 NwaCegarLoop]: trace histogram [47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:18:29,415 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-14 05:18:29,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:18:29,421 INFO L85 PathProgramCache]: Analyzing trace with hash 137784905, now seen corresponding path program 1 times [2022-12-14 05:18:29,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:18:29,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128742383] [2022-12-14 05:18:29,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:18:29,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:18:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:18:30,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2022-12-14 05:18:30,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:18:30,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128742383] [2022-12-14 05:18:30,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128742383] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:18:30,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841312890] [2022-12-14 05:18:30,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:18:30,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:18:30,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:18:30,110 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:18:30,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:18:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:18:30,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 05:18:30,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:18:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2022-12-14 05:18:30,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:18:30,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2022-12-14 05:18:30,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841312890] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:18:30,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1601391189] [2022-12-14 05:18:30,765 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-12-14 05:18:30,765 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:18:30,769 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:18:30,773 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:18:30,774 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:18:37,502 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 8 for LOIs [2022-12-14 05:18:37,503 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:18:58,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1601391189] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:18:58,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:18:58,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [4, 4, 4] total 68 [2022-12-14 05:18:58,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447949279] [2022-12-14 05:18:58,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:18:58,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-12-14 05:18:58,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:18:58,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-12-14 05:18:58,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2197, Invalid=2495, Unknown=0, NotChecked=0, Total=4692 [2022-12-14 05:18:58,473 INFO L87 Difference]: Start difference. First operand has 119 states, 45 states have (on average 1.5555555555555556) internal successors, (70), 65 states have internal predecessors, (70), 52 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 63 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-12-14 05:18:59,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:18:59,633 INFO L93 Difference]: Finished difference Result 119 states and 174 transitions. [2022-12-14 05:18:59,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-12-14 05:18:59,635 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 155 [2022-12-14 05:18:59,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:18:59,641 INFO L225 Difference]: With dead ends: 119 [2022-12-14 05:18:59,641 INFO L226 Difference]: Without dead ends: 105 [2022-12-14 05:18:59,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 399 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=2197, Invalid=2495, Unknown=0, NotChecked=0, Total=4692 [2022-12-14 05:18:59,646 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 45 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:18:59,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 146 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 05:18:59,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-12-14 05:18:59,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-12-14 05:18:59,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 43 states have (on average 1.302325581395349) internal successors, (56), 52 states have internal predecessors, (56), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-12-14 05:18:59,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 158 transitions. [2022-12-14 05:18:59,712 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 158 transitions. Word has length 155 [2022-12-14 05:18:59,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:18:59,714 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 158 transitions. [2022-12-14 05:18:59,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-12-14 05:18:59,714 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 158 transitions. [2022-12-14 05:18:59,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-12-14 05:18:59,716 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:18:59,717 INFO L195 NwaCegarLoop]: trace histogram [47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:18:59,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:18:59,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:18:59,919 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-14 05:18:59,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:18:59,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1238535624, now seen corresponding path program 1 times [2022-12-14 05:18:59,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:18:59,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208016829] [2022-12-14 05:18:59,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:18:59,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:18:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:19:00,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2162 trivial. 0 not checked. [2022-12-14 05:19:00,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:19:00,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208016829] [2022-12-14 05:19:00,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208016829] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:19:00,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:19:00,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:19:00,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384064508] [2022-12-14 05:19:00,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:19:00,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:19:00,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:19:00,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:19:00,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:19:00,022 INFO L87 Difference]: Start difference. First operand 105 states and 158 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2022-12-14 05:19:00,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:19:00,095 INFO L93 Difference]: Finished difference Result 109 states and 162 transitions. [2022-12-14 05:19:00,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:19:00,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 158 [2022-12-14 05:19:00,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:19:00,098 INFO L225 Difference]: With dead ends: 109 [2022-12-14 05:19:00,098 INFO L226 Difference]: Without dead ends: 104 [2022-12-14 05:19:00,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:19:00,100 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 14 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:19:00,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 255 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:19:00,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-12-14 05:19:00,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2022-12-14 05:19:00,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 43 states have (on average 1.186046511627907) internal successors, (51), 47 states have internal predecessors, (51), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-12-14 05:19:00,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 153 transitions. [2022-12-14 05:19:00,135 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 153 transitions. Word has length 158 [2022-12-14 05:19:00,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:19:00,136 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 153 transitions. [2022-12-14 05:19:00,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2022-12-14 05:19:00,136 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 153 transitions. [2022-12-14 05:19:00,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-14 05:19:00,137 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:19:00,137 INFO L195 NwaCegarLoop]: trace histogram [47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:19:00,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 05:19:00,138 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-14 05:19:00,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:19:00,138 INFO L85 PathProgramCache]: Analyzing trace with hash 260101424, now seen corresponding path program 1 times [2022-12-14 05:19:00,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:19:00,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673341202] [2022-12-14 05:19:00,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:19:00,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:19:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:19:00,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2022-12-14 05:19:00,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:19:00,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673341202] [2022-12-14 05:19:00,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673341202] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:19:00,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127054399] [2022-12-14 05:19:00,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:19:00,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:19:00,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:19:00,393 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:19:00,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 05:19:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:19:00,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 05:19:00,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:19:00,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2022-12-14 05:19:00,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:19:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2022-12-14 05:19:00,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127054399] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:19:00,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [857536578] [2022-12-14 05:19:00,832 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-12-14 05:19:00,832 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:19:00,832 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:19:00,833 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:19:00,833 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:19:07,438 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 8 for LOIs [2022-12-14 05:19:07,439 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:19:30,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [857536578] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:19:30,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:19:30,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [5, 5, 5] total 70 [2022-12-14 05:19:30,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964742563] [2022-12-14 05:19:30,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:19:30,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-12-14 05:19:30,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:19:30,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-12-14 05:19:30,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2273, Invalid=2697, Unknown=0, NotChecked=0, Total=4970 [2022-12-14 05:19:30,270 INFO L87 Difference]: Start difference. First operand 100 states and 153 transitions. Second operand has 65 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-12-14 05:19:31,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:19:31,410 INFO L93 Difference]: Finished difference Result 101 states and 154 transitions. [2022-12-14 05:19:31,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-12-14 05:19:31,411 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 159 [2022-12-14 05:19:31,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:19:31,412 INFO L225 Difference]: With dead ends: 101 [2022-12-14 05:19:31,412 INFO L226 Difference]: Without dead ends: 100 [2022-12-14 05:19:31,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 407 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=2273, Invalid=2697, Unknown=0, NotChecked=0, Total=4970 [2022-12-14 05:19:31,413 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 99 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:19:31,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 121 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 05:19:31,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-12-14 05:19:31,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2022-12-14 05:19:31,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 46 states have internal predecessors, (50), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-12-14 05:19:31,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 152 transitions. [2022-12-14 05:19:31,445 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 152 transitions. Word has length 159 [2022-12-14 05:19:31,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:19:31,446 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 152 transitions. [2022-12-14 05:19:31,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-12-14 05:19:31,446 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 152 transitions. [2022-12-14 05:19:31,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-14 05:19:31,447 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:19:31,448 INFO L195 NwaCegarLoop]: trace histogram [48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:19:31,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 05:19:31,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:19:31,650 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-14 05:19:31,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:19:31,651 INFO L85 PathProgramCache]: Analyzing trace with hash -966300118, now seen corresponding path program 1 times [2022-12-14 05:19:31,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:19:31,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565000098] [2022-12-14 05:19:31,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:19:31,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:19:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:19:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 2209 trivial. 0 not checked. [2022-12-14 05:19:31,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:19:31,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565000098] [2022-12-14 05:19:31,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565000098] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:19:31,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901444414] [2022-12-14 05:19:31,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:19:31,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:19:31,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:19:31,848 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:19:31,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 05:19:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:19:31,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 05:19:31,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:19:32,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 2209 trivial. 0 not checked. [2022-12-14 05:19:32,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:19:32,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 2209 trivial. 0 not checked. [2022-12-14 05:19:32,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901444414] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:19:32,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1953226331] [2022-12-14 05:19:32,234 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2022-12-14 05:19:32,234 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:19:32,235 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:19:32,235 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:19:32,235 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:19:39,089 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 56 for LOIs [2022-12-14 05:19:39,104 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:20:06,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1953226331] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:20:06,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:20:06,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [5, 5, 5] total 73 [2022-12-14 05:20:06,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847255645] [2022-12-14 05:20:06,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:20:06,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-12-14 05:20:06,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:20:06,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-12-14 05:20:06,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2470, Invalid=2932, Unknown=0, NotChecked=0, Total=5402 [2022-12-14 05:20:06,662 INFO L87 Difference]: Start difference. First operand 99 states and 152 transitions. Second operand has 69 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-12-14 05:20:07,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:20:07,915 INFO L93 Difference]: Finished difference Result 109 states and 164 transitions. [2022-12-14 05:20:07,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-12-14 05:20:07,916 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 166 [2022-12-14 05:20:07,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:20:07,917 INFO L225 Difference]: With dead ends: 109 [2022-12-14 05:20:07,917 INFO L226 Difference]: Without dead ends: 108 [2022-12-14 05:20:07,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 423 SyntacticMatches, 6 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=2470, Invalid=2932, Unknown=0, NotChecked=0, Total=5402 [2022-12-14 05:20:07,919 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 204 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:20:07,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 121 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 05:20:07,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-12-14 05:20:07,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2022-12-14 05:20:07,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 49 states have (on average 1.163265306122449) internal successors, (57), 52 states have internal predecessors, (57), 52 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-12-14 05:20:07,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 161 transitions. [2022-12-14 05:20:07,951 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 161 transitions. Word has length 166 [2022-12-14 05:20:07,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:20:07,951 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 161 transitions. [2022-12-14 05:20:07,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-12-14 05:20:07,952 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 161 transitions. [2022-12-14 05:20:07,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-12-14 05:20:07,953 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:20:07,953 INFO L195 NwaCegarLoop]: trace histogram [48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:20:07,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 05:20:08,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:20:08,155 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-14 05:20:08,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:20:08,156 INFO L85 PathProgramCache]: Analyzing trace with hash -368127642, now seen corresponding path program 1 times [2022-12-14 05:20:08,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:20:08,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493015478] [2022-12-14 05:20:08,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:20:08,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:20:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:20:08,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 2209 trivial. 0 not checked. [2022-12-14 05:20:08,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:20:08,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493015478] [2022-12-14 05:20:08,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493015478] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:20:08,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382351290] [2022-12-14 05:20:08,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:20:08,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:20:08,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:20:08,343 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:20:08,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 05:20:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:20:08,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 05:20:08,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:20:08,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 2209 trivial. 0 not checked. [2022-12-14 05:20:08,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:20:08,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 2209 trivial. 0 not checked. [2022-12-14 05:20:08,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382351290] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:20:08,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1072619884] [2022-12-14 05:20:08,721 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-12-14 05:20:08,721 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:20:08,722 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:20:08,722 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:20:08,722 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:20:15,487 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 56 for LOIs [2022-12-14 05:20:15,499 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:20:44,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1072619884] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:20:44,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:20:44,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [5, 5, 5] total 74 [2022-12-14 05:20:44,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564644502] [2022-12-14 05:20:44,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:20:44,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-12-14 05:20:44,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:20:44,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-12-14 05:20:44,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2535, Invalid=3015, Unknown=0, NotChecked=0, Total=5550 [2022-12-14 05:20:44,065 INFO L87 Difference]: Start difference. First operand 106 states and 161 transitions. Second operand has 70 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-12-14 05:20:46,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:20:46,065 INFO L93 Difference]: Finished difference Result 108 states and 163 transitions. [2022-12-14 05:20:46,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-12-14 05:20:46,066 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 168 [2022-12-14 05:20:46,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:20:46,067 INFO L225 Difference]: With dead ends: 108 [2022-12-14 05:20:46,067 INFO L226 Difference]: Without dead ends: 107 [2022-12-14 05:20:46,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 427 SyntacticMatches, 7 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=2535, Invalid=3015, Unknown=0, NotChecked=0, Total=5550 [2022-12-14 05:20:46,069 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 159 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-14 05:20:46,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 112 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-14 05:20:46,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-12-14 05:20:46,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 98. [2022-12-14 05:20:46,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 45 states have internal predecessors, (49), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-12-14 05:20:46,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 151 transitions. [2022-12-14 05:20:46,099 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 151 transitions. Word has length 168 [2022-12-14 05:20:46,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:20:46,100 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 151 transitions. [2022-12-14 05:20:46,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-12-14 05:20:46,100 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 151 transitions. [2022-12-14 05:20:46,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-12-14 05:20:46,101 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:20:46,101 INFO L195 NwaCegarLoop]: trace histogram [49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:20:46,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 05:20:46,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:20:46,304 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-14 05:20:46,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:20:46,305 INFO L85 PathProgramCache]: Analyzing trace with hash 458088716, now seen corresponding path program 1 times [2022-12-14 05:20:46,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:20:46,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002303320] [2022-12-14 05:20:46,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:20:46,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:20:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:20:46,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 10 proven. 84 refuted. 0 times theorem prover too weak. 2258 trivial. 0 not checked. [2022-12-14 05:20:46,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:20:46,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002303320] [2022-12-14 05:20:46,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002303320] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:20:46,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57198780] [2022-12-14 05:20:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:20:46,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:20:46,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:20:46,477 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:20:46,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 05:20:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:20:46,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 05:20:46,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:20:46,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 2304 trivial. 0 not checked. [2022-12-14 05:20:46,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:20:46,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 2304 trivial. 0 not checked. [2022-12-14 05:20:46,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57198780] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:20:46,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1830301627] [2022-12-14 05:20:46,856 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2022-12-14 05:20:46,856 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:20:46,857 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:20:46,857 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:20:46,857 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:20:54,266 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 8 for LOIs [2022-12-14 05:20:54,267 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:21:25,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1830301627] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:21:25,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:21:25,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [5, 5, 5] total 79 [2022-12-14 05:21:25,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257467251] [2022-12-14 05:21:25,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:21:25,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-12-14 05:21:25,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:21:25,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-12-14 05:21:25,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2804, Invalid=3516, Unknown=0, NotChecked=0, Total=6320 [2022-12-14 05:21:25,998 INFO L87 Difference]: Start difference. First operand 98 states and 151 transitions. Second operand has 73 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 25 states have internal predecessors, (27), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-12-14 05:21:28,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:21:28,187 INFO L93 Difference]: Finished difference Result 116 states and 173 transitions. [2022-12-14 05:21:28,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-12-14 05:21:28,188 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 25 states have internal predecessors, (27), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 173 [2022-12-14 05:21:28,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:21:28,189 INFO L225 Difference]: With dead ends: 116 [2022-12-14 05:21:28,189 INFO L226 Difference]: Without dead ends: 115 [2022-12-14 05:21:28,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 439 SyntacticMatches, 6 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 31.7s TimeCoverageRelationStatistics Valid=2804, Invalid=3516, Unknown=0, NotChecked=0, Total=6320 [2022-12-14 05:21:28,191 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 156 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:21:28,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 99 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-14 05:21:28,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-12-14 05:21:28,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 110. [2022-12-14 05:21:28,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 53 states have (on average 1.150943396226415) internal successors, (61), 55 states have internal predecessors, (61), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-12-14 05:21:28,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 167 transitions. [2022-12-14 05:21:28,223 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 167 transitions. Word has length 173 [2022-12-14 05:21:28,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:21:28,223 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 167 transitions. [2022-12-14 05:21:28,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 25 states have internal predecessors, (27), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-12-14 05:21:28,223 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 167 transitions. [2022-12-14 05:21:28,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-12-14 05:21:28,224 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:21:28,224 INFO L195 NwaCegarLoop]: trace histogram [49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:21:28,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 05:21:28,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 05:21:28,426 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-14 05:21:28,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:21:28,427 INFO L85 PathProgramCache]: Analyzing trace with hash -651712312, now seen corresponding path program 1 times [2022-12-14 05:21:28,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:21:28,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615483428] [2022-12-14 05:21:28,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:21:28,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:21:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:21:28,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 2304 trivial. 0 not checked. [2022-12-14 05:21:28,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:21:28,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615483428] [2022-12-14 05:21:28,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615483428] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:21:28,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495121854] [2022-12-14 05:21:28,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:21:28,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:21:28,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:21:28,587 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:21:28,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 05:21:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:21:28,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 05:21:28,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:21:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 2 proven. 46 refuted. 0 times theorem prover too weak. 2304 trivial. 0 not checked. [2022-12-14 05:21:28,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:21:29,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 2 proven. 46 refuted. 0 times theorem prover too weak. 2304 trivial. 0 not checked. [2022-12-14 05:21:29,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495121854] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:21:29,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [222127073] [2022-12-14 05:21:29,041 INFO L159 IcfgInterpreter]: Started Sifa with 80 locations of interest [2022-12-14 05:21:29,042 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:21:29,042 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:21:29,042 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:21:29,042 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:21:36,275 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 8 for LOIs [2022-12-14 05:21:36,276 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:22:09,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [222127073] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:22:09,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:22:09,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [5, 7, 7] total 86 [2022-12-14 05:22:09,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804897822] [2022-12-14 05:22:09,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:22:09,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-12-14 05:22:09,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:22:09,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-12-14 05:22:09,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3163, Invalid=4319, Unknown=0, NotChecked=0, Total=7482 [2022-12-14 05:22:09,534 INFO L87 Difference]: Start difference. First operand 110 states and 167 transitions. Second operand has 74 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 26 states have internal predecessors, (29), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-12-14 05:22:11,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:22:11,910 INFO L93 Difference]: Finished difference Result 122 states and 181 transitions. [2022-12-14 05:22:11,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-12-14 05:22:11,911 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 26 states have internal predecessors, (29), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 175 [2022-12-14 05:22:11,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:22:11,912 INFO L225 Difference]: With dead ends: 122 [2022-12-14 05:22:11,912 INFO L226 Difference]: Without dead ends: 121 [2022-12-14 05:22:11,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 437 SyntacticMatches, 6 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 33.3s TimeCoverageRelationStatistics Valid=3163, Invalid=4319, Unknown=0, NotChecked=0, Total=7482 [2022-12-14 05:22:11,914 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 100 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:22:11,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 122 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-14 05:22:11,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-12-14 05:22:11,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 112. [2022-12-14 05:22:11,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 57 states have internal predecessors, (63), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-12-14 05:22:11,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 169 transitions. [2022-12-14 05:22:11,952 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 169 transitions. Word has length 175 [2022-12-14 05:22:11,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:22:11,953 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 169 transitions. [2022-12-14 05:22:11,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 26 states have internal predecessors, (29), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-12-14 05:22:11,953 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 169 transitions. [2022-12-14 05:22:11,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-12-14 05:22:11,954 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:22:11,954 INFO L195 NwaCegarLoop]: trace histogram [49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:22:11,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 05:22:12,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:22:12,156 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-14 05:22:12,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:22:12,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1256694352, now seen corresponding path program 1 times [2022-12-14 05:22:12,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:22:12,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570889477] [2022-12-14 05:22:12,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:22:12,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:22:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:22:12,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 10 proven. 84 refuted. 0 times theorem prover too weak. 2258 trivial. 0 not checked. [2022-12-14 05:22:12,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:22:12,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570889477] [2022-12-14 05:22:12,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570889477] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:22:12,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261691343] [2022-12-14 05:22:12,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:22:12,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:22:12,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:22:12,370 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:22:12,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 05:22:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:22:12,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 05:22:12,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:22:12,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 2304 trivial. 0 not checked. [2022-12-14 05:22:12,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:22:12,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 2304 trivial. 0 not checked. [2022-12-14 05:22:12,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261691343] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:22:12,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [721478014] [2022-12-14 05:22:12,775 INFO L159 IcfgInterpreter]: Started Sifa with 80 locations of interest [2022-12-14 05:22:12,775 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:22:12,775 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:22:12,775 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:22:12,775 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:22:19,729 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 8 for LOIs [2022-12-14 05:22:19,730 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:22:52,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [721478014] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:22:52,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:22:52,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [5, 5, 5] total 80 [2022-12-14 05:22:52,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775144771] [2022-12-14 05:22:52,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:22:52,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-12-14 05:22:52,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:22:52,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-12-14 05:22:52,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2871, Invalid=3609, Unknown=0, NotChecked=0, Total=6480 [2022-12-14 05:22:52,598 INFO L87 Difference]: Start difference. First operand 112 states and 169 transitions. Second operand has 74 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 26 states have internal predecessors, (29), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-12-14 05:22:54,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:22:54,718 INFO L93 Difference]: Finished difference Result 122 states and 181 transitions. [2022-12-14 05:22:54,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-12-14 05:22:54,718 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 26 states have internal predecessors, (29), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 175 [2022-12-14 05:22:54,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:22:54,719 INFO L225 Difference]: With dead ends: 122 [2022-12-14 05:22:54,719 INFO L226 Difference]: Without dead ends: 121 [2022-12-14 05:22:54,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 443 SyntacticMatches, 7 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 32.9s TimeCoverageRelationStatistics Valid=2871, Invalid=3609, Unknown=0, NotChecked=0, Total=6480 [2022-12-14 05:22:54,721 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 156 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:22:54,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 123 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-14 05:22:54,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-12-14 05:22:54,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 112. [2022-12-14 05:22:54,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 57 states have internal predecessors, (63), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-12-14 05:22:54,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 169 transitions. [2022-12-14 05:22:54,752 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 169 transitions. Word has length 175 [2022-12-14 05:22:54,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:22:54,752 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 169 transitions. [2022-12-14 05:22:54,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 26 states have internal predecessors, (29), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-12-14 05:22:54,753 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 169 transitions. [2022-12-14 05:22:54,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-12-14 05:22:54,753 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:22:54,754 INFO L195 NwaCegarLoop]: trace histogram [49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:22:54,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 05:22:54,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:22:54,956 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-14 05:22:54,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:22:54,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1990842100, now seen corresponding path program 1 times [2022-12-14 05:22:54,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:22:54,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774934653] [2022-12-14 05:22:54,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:22:54,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:22:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:22:55,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 2304 trivial. 0 not checked. [2022-12-14 05:22:55,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:22:55,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774934653] [2022-12-14 05:22:55,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774934653] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:22:55,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926437112] [2022-12-14 05:22:55,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:22:55,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:22:55,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:22:55,141 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:22:55,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 05:22:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:22:55,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 05:22:55,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:22:55,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 2304 trivial. 0 not checked. [2022-12-14 05:22:55,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:22:55,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 2304 trivial. 0 not checked. [2022-12-14 05:22:55,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926437112] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:22:55,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2010007450] [2022-12-14 05:22:55,686 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2022-12-14 05:22:55,686 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:22:55,686 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:22:55,686 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:22:55,686 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:23:03,629 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 8 for LOIs [2022-12-14 05:23:03,630 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:23:41,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2010007450] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:23:41,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:23:41,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [9, 9, 9] total 94 [2022-12-14 05:23:41,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803062373] [2022-12-14 05:23:41,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:23:41,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-12-14 05:23:41,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:23:41,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-12-14 05:23:41,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3490, Invalid=5440, Unknown=0, NotChecked=0, Total=8930 [2022-12-14 05:23:41,443 INFO L87 Difference]: Start difference. First operand 112 states and 169 transitions. Second operand has 75 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 27 states have internal predecessors, (31), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-12-14 05:23:43,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:23:43,205 INFO L93 Difference]: Finished difference Result 115 states and 172 transitions. [2022-12-14 05:23:43,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-12-14 05:23:43,206 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 27 states have internal predecessors, (31), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 177 [2022-12-14 05:23:43,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:23:43,207 INFO L225 Difference]: With dead ends: 115 [2022-12-14 05:23:43,207 INFO L226 Difference]: Without dead ends: 114 [2022-12-14 05:23:43,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 438 SyntacticMatches, 7 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1531 ImplicationChecksByTransitivity, 37.9s TimeCoverageRelationStatistics Valid=3490, Invalid=5440, Unknown=0, NotChecked=0, Total=8930 [2022-12-14 05:23:43,208 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 192 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 05:23:43,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 113 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 05:23:43,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-12-14 05:23:43,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 97. [2022-12-14 05:23:43,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 44 states have internal predecessors, (48), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-12-14 05:23:43,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 150 transitions. [2022-12-14 05:23:43,238 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 150 transitions. Word has length 177 [2022-12-14 05:23:43,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:23:43,238 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 150 transitions. [2022-12-14 05:23:43,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 27 states have internal predecessors, (31), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-12-14 05:23:43,238 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 150 transitions. [2022-12-14 05:23:43,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-12-14 05:23:43,239 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:23:43,239 INFO L195 NwaCegarLoop]: trace histogram [50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:23:43,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 05:23:43,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:23:43,441 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-14 05:23:43,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:23:43,442 INFO L85 PathProgramCache]: Analyzing trace with hash -395377402, now seen corresponding path program 1 times [2022-12-14 05:23:43,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:23:43,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389146139] [2022-12-14 05:23:43,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:23:43,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:23:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:23:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2022-12-14 05:23:43,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:23:43,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389146139] [2022-12-14 05:23:43,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389146139] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:23:43,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896325674] [2022-12-14 05:23:43,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:23:43,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:23:43,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:23:43,585 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:23:43,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 05:23:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:23:43,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 05:23:43,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:23:43,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2022-12-14 05:23:43,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:23:43,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2022-12-14 05:23:43,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896325674] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:23:43,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1376947625] [2022-12-14 05:23:43,894 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2022-12-14 05:23:43,894 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:23:43,895 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:23:43,895 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:23:43,895 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:23:51,861 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 56 for LOIs [2022-12-14 05:23:51,873 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:24:23,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1376947625] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:24:23,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:24:23,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [5, 5, 5] total 79 [2022-12-14 05:24:23,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400886647] [2022-12-14 05:24:23,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:24:23,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-12-14 05:24:23,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:24:23,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-12-14 05:24:23,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2789, Invalid=3373, Unknown=0, NotChecked=0, Total=6162 [2022-12-14 05:24:23,592 INFO L87 Difference]: Start difference. First operand 97 states and 150 transitions. Second operand has 74 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 26 states have internal predecessors, (31), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 05:24:25,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:24:25,439 INFO L93 Difference]: Finished difference Result 131 states and 189 transitions. [2022-12-14 05:24:25,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-12-14 05:24:25,439 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 26 states have internal predecessors, (31), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 180 [2022-12-14 05:24:25,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:24:25,440 INFO L225 Difference]: With dead ends: 131 [2022-12-14 05:24:25,440 INFO L226 Difference]: Without dead ends: 113 [2022-12-14 05:24:25,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 461 SyntacticMatches, 5 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 31.7s TimeCoverageRelationStatistics Valid=2789, Invalid=3373, Unknown=0, NotChecked=0, Total=6162 [2022-12-14 05:24:25,441 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 179 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 05:24:25,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 104 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 05:24:25,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-12-14 05:24:25,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2022-12-14 05:24:25,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 52 states have internal predecessors, (57), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-12-14 05:24:25,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 163 transitions. [2022-12-14 05:24:25,474 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 163 transitions. Word has length 180 [2022-12-14 05:24:25,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:24:25,474 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 163 transitions. [2022-12-14 05:24:25,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 26 states have internal predecessors, (31), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 05:24:25,475 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 163 transitions. [2022-12-14 05:24:25,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-12-14 05:24:25,475 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:24:25,475 INFO L195 NwaCegarLoop]: trace histogram [50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:24:25,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-14 05:24:25,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 05:24:25,677 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-14 05:24:25,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:24:25,678 INFO L85 PathProgramCache]: Analyzing trace with hash 479415106, now seen corresponding path program 1 times [2022-12-14 05:24:25,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:24:25,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216290975] [2022-12-14 05:24:25,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:24:25,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:24:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:24:25,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2022-12-14 05:24:25,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:24:25,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216290975] [2022-12-14 05:24:25,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216290975] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:24:25,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359099008] [2022-12-14 05:24:25,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:24:25,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:24:25,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:24:25,816 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:24:25,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 05:24:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:24:25,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 05:24:25,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:24:26,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 4 proven. 45 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2022-12-14 05:24:26,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:24:26,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 4 proven. 45 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2022-12-14 05:24:26,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359099008] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:24:26,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2033780140] [2022-12-14 05:24:26,215 INFO L159 IcfgInterpreter]: Started Sifa with 85 locations of interest [2022-12-14 05:24:26,215 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:24:26,215 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:24:26,215 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:24:26,215 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:24:33,904 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 56 for LOIs [2022-12-14 05:24:33,912 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:25:13,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2033780140] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:25:13,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:25:13,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [5, 7, 7] total 89 [2022-12-14 05:25:13,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915525886] [2022-12-14 05:25:13,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:25:13,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-12-14 05:25:13,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:25:13,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-12-14 05:25:13,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3367, Invalid=4643, Unknown=0, NotChecked=0, Total=8010 [2022-12-14 05:25:13,470 INFO L87 Difference]: Start difference. First operand 107 states and 163 transitions. Second operand has 78 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 30 states have internal predecessors, (33), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 05:25:15,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:25:15,802 INFO L93 Difference]: Finished difference Result 122 states and 180 transitions. [2022-12-14 05:25:15,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-12-14 05:25:15,803 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 30 states have internal predecessors, (33), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 182 [2022-12-14 05:25:15,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:25:15,804 INFO L225 Difference]: With dead ends: 122 [2022-12-14 05:25:15,804 INFO L226 Difference]: Without dead ends: 121 [2022-12-14 05:25:15,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 453 SyntacticMatches, 8 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 39.6s TimeCoverageRelationStatistics Valid=3367, Invalid=4643, Unknown=0, NotChecked=0, Total=8010 [2022-12-14 05:25:15,805 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 151 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:25:15,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 119 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-14 05:25:15,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-12-14 05:25:15,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 116. [2022-12-14 05:25:15,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 59 states have (on average 1.11864406779661) internal successors, (66), 60 states have internal predecessors, (66), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-12-14 05:25:15,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 174 transitions. [2022-12-14 05:25:15,838 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 174 transitions. Word has length 182 [2022-12-14 05:25:15,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:25:15,838 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 174 transitions. [2022-12-14 05:25:15,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 30 states have internal predecessors, (33), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 05:25:15,839 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 174 transitions. [2022-12-14 05:25:15,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-12-14 05:25:15,839 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:25:15,839 INFO L195 NwaCegarLoop]: trace histogram [50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:25:15,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 05:25:16,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 05:25:16,041 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-14 05:25:16,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:25:16,043 INFO L85 PathProgramCache]: Analyzing trace with hash -407612982, now seen corresponding path program 1 times [2022-12-14 05:25:16,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:25:16,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192028881] [2022-12-14 05:25:16,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:25:16,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:25:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:25:16,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2022-12-14 05:25:16,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:25:16,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192028881] [2022-12-14 05:25:16,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192028881] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:25:16,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535504150] [2022-12-14 05:25:16,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:25:16,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:25:16,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:25:16,227 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:25:16,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 05:25:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:25:16,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 05:25:16,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:25:16,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2022-12-14 05:25:16,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:25:16,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2022-12-14 05:25:16,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535504150] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:25:16,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1875528389] [2022-12-14 05:25:16,591 INFO L159 IcfgInterpreter]: Started Sifa with 85 locations of interest [2022-12-14 05:25:16,591 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:25:16,592 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:25:16,592 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:25:16,592 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:25:24,819 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 56 for LOIs [2022-12-14 05:25:24,827 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:26:02,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1875528389] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:26:02,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:26:02,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [5, 5, 5] total 82 [2022-12-14 05:26:02,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209832707] [2022-12-14 05:26:02,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:26:02,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-12-14 05:26:02,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:02,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-12-14 05:26:02,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3055, Invalid=3751, Unknown=0, NotChecked=0, Total=6806 [2022-12-14 05:26:02,640 INFO L87 Difference]: Start difference. First operand 116 states and 174 transitions. Second operand has 78 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 30 states have internal predecessors, (33), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 05:26:04,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:04,662 INFO L93 Difference]: Finished difference Result 136 states and 198 transitions. [2022-12-14 05:26:04,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-12-14 05:26:04,663 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 30 states have internal predecessors, (33), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 182 [2022-12-14 05:26:04,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:04,664 INFO L225 Difference]: With dead ends: 136 [2022-12-14 05:26:04,664 INFO L226 Difference]: Without dead ends: 135 [2022-12-14 05:26:04,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 459 SyntacticMatches, 9 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 37.8s TimeCoverageRelationStatistics Valid=3055, Invalid=3751, Unknown=0, NotChecked=0, Total=6806 [2022-12-14 05:26:04,665 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 163 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:04,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 90 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-14 05:26:04,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-12-14 05:26:04,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 123. [2022-12-14 05:26:04,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 65 states have (on average 1.123076923076923) internal successors, (73), 66 states have internal predecessors, (73), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-12-14 05:26:04,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 183 transitions. [2022-12-14 05:26:04,703 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 183 transitions. Word has length 182 [2022-12-14 05:26:04,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:04,703 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 183 transitions. [2022-12-14 05:26:04,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 30 states have internal predecessors, (33), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 05:26:04,703 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 183 transitions. [2022-12-14 05:26:04,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-12-14 05:26:04,704 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:04,704 INFO L195 NwaCegarLoop]: trace histogram [50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:04,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-14 05:26:04,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:04,906 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-14 05:26:04,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:04,907 INFO L85 PathProgramCache]: Analyzing trace with hash 89788226, now seen corresponding path program 1 times [2022-12-14 05:26:04,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:04,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187588623] [2022-12-14 05:26:04,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:04,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:05,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 14 proven. 82 refuted. 0 times theorem prover too weak. 2354 trivial. 0 not checked. [2022-12-14 05:26:05,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:05,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187588623] [2022-12-14 05:26:05,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187588623] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:05,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590907194] [2022-12-14 05:26:05,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:05,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:05,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:05,077 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:05,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 05:26:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:05,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 05:26:05,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:05,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2022-12-14 05:26:05,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:26:05,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2022-12-14 05:26:05,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590907194] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:26:05,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1099415349] [2022-12-14 05:26:05,428 INFO L159 IcfgInterpreter]: Started Sifa with 85 locations of interest [2022-12-14 05:26:05,428 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:26:05,428 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:26:05,428 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:26:05,428 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:26:13,180 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 56 for LOIs [2022-12-14 05:26:13,191 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:26:51,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1099415349] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:26:51,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:26:51,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [5, 5, 5] total 84 [2022-12-14 05:26:51,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872467860] [2022-12-14 05:26:51,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:26:51,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-12-14 05:26:51,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:51,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-12-14 05:26:51,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3136, Invalid=4004, Unknown=0, NotChecked=0, Total=7140 [2022-12-14 05:26:51,767 INFO L87 Difference]: Start difference. First operand 123 states and 183 transitions. Second operand has 78 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 30 states have internal predecessors, (33), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 05:26:53,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:53,917 INFO L93 Difference]: Finished difference Result 141 states and 205 transitions. [2022-12-14 05:26:53,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-12-14 05:26:53,918 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 30 states have internal predecessors, (33), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 182 [2022-12-14 05:26:53,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:53,919 INFO L225 Difference]: With dead ends: 141 [2022-12-14 05:26:53,919 INFO L226 Difference]: Without dead ends: 140 [2022-12-14 05:26:53,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 459 SyntacticMatches, 8 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 38.6s TimeCoverageRelationStatistics Valid=3136, Invalid=4004, Unknown=0, NotChecked=0, Total=7140 [2022-12-14 05:26:53,920 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 102 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:53,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 107 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-14 05:26:53,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-12-14 05:26:53,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 123. [2022-12-14 05:26:53,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 65 states have (on average 1.123076923076923) internal successors, (73), 66 states have internal predecessors, (73), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-12-14 05:26:53,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 183 transitions. [2022-12-14 05:26:53,955 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 183 transitions. Word has length 182 [2022-12-14 05:26:53,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:53,955 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 183 transitions. [2022-12-14 05:26:53,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 30 states have internal predecessors, (33), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 05:26:53,956 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 183 transitions. [2022-12-14 05:26:53,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-12-14 05:26:53,956 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:53,957 INFO L195 NwaCegarLoop]: trace histogram [50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:53,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 05:26:54,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:54,158 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-14 05:26:54,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:54,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1605924614, now seen corresponding path program 1 times [2022-12-14 05:26:54,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:54,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148564308] [2022-12-14 05:26:54,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:54,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:54,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2022-12-14 05:26:54,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:54,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148564308] [2022-12-14 05:26:54,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148564308] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:54,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427995070] [2022-12-14 05:26:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:54,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:54,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:54,359 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:54,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 05:26:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:54,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 05:26:54,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:54,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2022-12-14 05:26:54,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:26:54,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2022-12-14 05:26:54,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427995070] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:26:54,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1439897481] [2022-12-14 05:26:54,745 INFO L159 IcfgInterpreter]: Started Sifa with 87 locations of interest [2022-12-14 05:26:54,745 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:26:54,745 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:26:54,745 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:26:54,746 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:27:02,383 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 56 for LOIs [2022-12-14 05:27:02,394 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:27:43,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1439897481] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:27:43,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:27:43,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [9, 5, 5] total 90 [2022-12-14 05:27:43,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926848739] [2022-12-14 05:27:43,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:27:43,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-12-14 05:27:43,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:27:43,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-12-14 05:27:43,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3441, Invalid=4749, Unknown=0, NotChecked=0, Total=8190 [2022-12-14 05:27:43,290 INFO L87 Difference]: Start difference. First operand 123 states and 183 transitions. Second operand has 79 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 31 states have internal predecessors, (35), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 05:27:45,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:27:45,427 INFO L93 Difference]: Finished difference Result 141 states and 205 transitions. [2022-12-14 05:27:45,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-12-14 05:27:45,428 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 31 states have internal predecessors, (35), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 184 [2022-12-14 05:27:45,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:27:45,429 INFO L225 Difference]: With dead ends: 141 [2022-12-14 05:27:45,429 INFO L226 Difference]: Without dead ends: 140 [2022-12-14 05:27:45,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 461 SyntacticMatches, 9 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 40.9s TimeCoverageRelationStatistics Valid=3441, Invalid=4749, Unknown=0, NotChecked=0, Total=8190 [2022-12-14 05:27:45,430 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 201 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:27:45,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 113 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-14 05:27:45,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-12-14 05:27:45,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 128. [2022-12-14 05:27:45,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 70 states have internal predecessors, (78), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-12-14 05:27:45,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 190 transitions. [2022-12-14 05:27:45,470 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 190 transitions. Word has length 184 [2022-12-14 05:27:45,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:27:45,471 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 190 transitions. [2022-12-14 05:27:45,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 31 states have internal predecessors, (35), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 05:27:45,471 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 190 transitions. [2022-12-14 05:27:45,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-12-14 05:27:45,472 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:27:45,472 INFO L195 NwaCegarLoop]: trace histogram [50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:27:45,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-14 05:27:45,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 05:27:45,673 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-14 05:27:45,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:27:45,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1427851650, now seen corresponding path program 1 times [2022-12-14 05:27:45,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:27:45,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71178509] [2022-12-14 05:27:45,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:27:45,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:27:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:27:45,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2022-12-14 05:27:45,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:27:45,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71178509] [2022-12-14 05:27:45,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71178509] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:27:45,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512449850] [2022-12-14 05:27:45,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:27:45,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:27:45,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:27:45,807 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:27:45,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 05:27:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:27:45,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 05:27:45,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:27:46,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 4 proven. 45 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2022-12-14 05:27:46,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:27:46,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 4 proven. 45 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2022-12-14 05:27:46,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512449850] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:27:46,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2007612686] [2022-12-14 05:27:46,279 INFO L159 IcfgInterpreter]: Started Sifa with 87 locations of interest [2022-12-14 05:27:46,279 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:27:46,279 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:27:46,279 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:27:46,279 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:27:53,631 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 56 for LOIs [2022-12-14 05:27:53,640 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:28:34,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2007612686] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:28:34,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:28:34,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [5, 7, 7] total 90 [2022-12-14 05:28:34,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274133992] [2022-12-14 05:28:34,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:28:34,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-12-14 05:28:34,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:28:34,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-12-14 05:28:34,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3436, Invalid=4754, Unknown=0, NotChecked=0, Total=8190 [2022-12-14 05:28:34,167 INFO L87 Difference]: Start difference. First operand 128 states and 190 transitions. Second operand has 79 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 31 states have internal predecessors, (35), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 05:28:37,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:28:37,031 INFO L93 Difference]: Finished difference Result 141 states and 205 transitions. [2022-12-14 05:28:37,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-12-14 05:28:37,032 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 31 states have internal predecessors, (35), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 184 [2022-12-14 05:28:37,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:28:37,032 INFO L225 Difference]: With dead ends: 141 [2022-12-14 05:28:37,032 INFO L226 Difference]: Without dead ends: 140 [2022-12-14 05:28:37,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 457 SyntacticMatches, 9 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 40.5s TimeCoverageRelationStatistics Valid=3436, Invalid=4754, Unknown=0, NotChecked=0, Total=8190 [2022-12-14 05:28:37,033 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 133 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-14 05:28:37,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 104 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-14 05:28:37,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-12-14 05:28:37,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 123. [2022-12-14 05:28:37,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 65 states have (on average 1.123076923076923) internal successors, (73), 66 states have internal predecessors, (73), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-12-14 05:28:37,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 183 transitions. [2022-12-14 05:28:37,069 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 183 transitions. Word has length 184 [2022-12-14 05:28:37,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:28:37,070 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 183 transitions. [2022-12-14 05:28:37,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 31 states have internal predecessors, (35), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 05:28:37,070 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 183 transitions. [2022-12-14 05:28:37,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-12-14 05:28:37,070 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:28:37,071 INFO L195 NwaCegarLoop]: trace histogram [50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:28:37,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-14 05:28:37,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:28:37,273 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-14 05:28:37,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:28:37,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1980087558, now seen corresponding path program 1 times [2022-12-14 05:28:37,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:28:37,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398903001] [2022-12-14 05:28:37,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:28:37,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:28:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:28:37,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2022-12-14 05:28:37,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:28:37,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398903001] [2022-12-14 05:28:37,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398903001] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:28:37,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898793173] [2022-12-14 05:28:37,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:28:37,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:28:37,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:28:37,413 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:28:37,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 05:28:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:28:37,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 05:28:37,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:28:37,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2022-12-14 05:28:37,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:28:37,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2022-12-14 05:28:37,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898793173] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:28:37,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [122751131] [2022-12-14 05:28:37,780 INFO L159 IcfgInterpreter]: Started Sifa with 87 locations of interest [2022-12-14 05:28:37,780 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:28:37,780 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:28:37,780 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:28:37,780 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:28:45,235 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 56 for LOIs [2022-12-14 05:28:45,243 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:29:23,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [122751131] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:29:23,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:29:23,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [5, 5, 5] total 83 [2022-12-14 05:29:23,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855272040] [2022-12-14 05:29:23,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:29:23,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-12-14 05:29:23,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:29:23,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-12-14 05:29:23,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3120, Invalid=3852, Unknown=0, NotChecked=0, Total=6972 [2022-12-14 05:29:23,688 INFO L87 Difference]: Start difference. First operand 123 states and 183 transitions. Second operand has 79 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 31 states have internal predecessors, (35), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 05:29:26,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:29:26,727 INFO L93 Difference]: Finished difference Result 134 states and 196 transitions. [2022-12-14 05:29:26,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-12-14 05:29:26,727 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 31 states have internal predecessors, (35), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 184 [2022-12-14 05:29:26,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:29:26,728 INFO L225 Difference]: With dead ends: 134 [2022-12-14 05:29:26,728 INFO L226 Difference]: Without dead ends: 133 [2022-12-14 05:29:26,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 463 SyntacticMatches, 10 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 38.4s TimeCoverageRelationStatistics Valid=3120, Invalid=3852, Unknown=0, NotChecked=0, Total=6972 [2022-12-14 05:29:26,729 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 189 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-14 05:29:26,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 114 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1659 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-14 05:29:26,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-12-14 05:29:26,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 123. [2022-12-14 05:29:26,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 65 states have (on average 1.123076923076923) internal successors, (73), 66 states have internal predecessors, (73), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-12-14 05:29:26,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 183 transitions. [2022-12-14 05:29:26,765 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 183 transitions. Word has length 184 [2022-12-14 05:29:26,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:29:26,765 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 183 transitions. [2022-12-14 05:29:26,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 31 states have internal predecessors, (35), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 05:29:26,765 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 183 transitions. [2022-12-14 05:29:26,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-12-14 05:29:26,766 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:29:26,766 INFO L195 NwaCegarLoop]: trace histogram [50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:29:26,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-14 05:29:26,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 05:29:26,967 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-14 05:29:26,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:29:26,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1621359806, now seen corresponding path program 1 times [2022-12-14 05:29:26,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:29:26,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071825299] [2022-12-14 05:29:26,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:29:26,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:29:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:29:27,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2022-12-14 05:29:27,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:29:27,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071825299] [2022-12-14 05:29:27,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071825299] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:29:27,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256904724] [2022-12-14 05:29:27,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:29:27,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:29:27,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:29:27,137 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:29:27,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 05:29:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:29:27,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 05:29:27,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:29:27,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2022-12-14 05:29:27,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:29:27,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2022-12-14 05:29:27,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256904724] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:29:27,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [253536707] [2022-12-14 05:29:27,595 INFO L159 IcfgInterpreter]: Started Sifa with 89 locations of interest [2022-12-14 05:29:27,595 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:29:27,595 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:29:27,595 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:29:27,595 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:29:34,963 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 56 for LOIs [2022-12-14 05:29:34,970 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:30:14,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [253536707] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:30:14,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:30:14,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [11, 11, 11] total 103 [2022-12-14 05:30:14,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501033215] [2022-12-14 05:30:14,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:30:14,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-12-14 05:30:14,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:30:14,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-12-14 05:30:14,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3849, Invalid=6657, Unknown=0, NotChecked=0, Total=10506 [2022-12-14 05:30:14,648 INFO L87 Difference]: Start difference. First operand 123 states and 183 transitions. Second operand has 77 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 29 states have internal predecessors, (37), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 05:30:16,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:30:16,808 INFO L93 Difference]: Finished difference Result 135 states and 194 transitions. [2022-12-14 05:30:16,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-12-14 05:30:16,809 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 29 states have internal predecessors, (37), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 186 [2022-12-14 05:30:16,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:30:16,810 INFO L225 Difference]: With dead ends: 135 [2022-12-14 05:30:16,810 INFO L226 Difference]: Without dead ends: 115 [2022-12-14 05:30:16,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 460 SyntacticMatches, 6 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2010 ImplicationChecksByTransitivity, 39.8s TimeCoverageRelationStatistics Valid=3849, Invalid=6657, Unknown=0, NotChecked=0, Total=10506 [2022-12-14 05:30:16,811 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 151 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:30:16,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 116 Invalid, 1192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-14 05:30:16,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-12-14 05:30:16,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2022-12-14 05:30:16,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 57 states have (on average 1.087719298245614) internal successors, (62), 57 states have internal predecessors, (62), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-12-14 05:30:16,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 170 transitions. [2022-12-14 05:30:16,872 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 170 transitions. Word has length 186 [2022-12-14 05:30:16,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:30:16,872 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 170 transitions. [2022-12-14 05:30:16,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 29 states have internal predecessors, (37), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 05:30:16,873 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 170 transitions. [2022-12-14 05:30:16,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-12-14 05:30:16,874 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:30:16,874 INFO L195 NwaCegarLoop]: trace histogram [51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:30:16,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-14 05:30:17,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 05:30:17,075 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-14 05:30:17,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:30:17,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1537215276, now seen corresponding path program 1 times [2022-12-14 05:30:17,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:30:17,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354799086] [2022-12-14 05:30:17,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:30:17,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:30:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:30:17,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 8 proven. 42 refuted. 0 times theorem prover too weak. 2500 trivial. 0 not checked. [2022-12-14 05:30:17,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:30:17,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354799086] [2022-12-14 05:30:17,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354799086] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:30:17,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645332266] [2022-12-14 05:30:17,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:30:17,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:30:17,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:30:17,195 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:30:17,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-14 05:30:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:30:17,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 05:30:17,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:30:17,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 8 proven. 42 refuted. 0 times theorem prover too weak. 2500 trivial. 0 not checked. [2022-12-14 05:30:17,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:30:17,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 8 proven. 42 refuted. 0 times theorem prover too weak. 2500 trivial. 0 not checked. [2022-12-14 05:30:17,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645332266] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:30:17,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1760879907] [2022-12-14 05:30:17,520 INFO L159 IcfgInterpreter]: Started Sifa with 90 locations of interest [2022-12-14 05:30:17,520 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:30:17,520 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:30:17,520 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:30:17,520 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:30:25,533 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 8 for LOIs [2022-12-14 05:30:25,533 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:31:07,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1760879907] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:31:07,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:31:07,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [5, 5, 5] total 87 [2022-12-14 05:31:07,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158946598] [2022-12-14 05:31:07,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:31:07,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-12-14 05:31:07,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:31:07,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-12-14 05:31:07,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3383, Invalid=4273, Unknown=0, NotChecked=0, Total=7656 [2022-12-14 05:31:07,823 INFO L87 Difference]: Start difference. First operand 113 states and 170 transitions. Second operand has 82 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 34 states have internal predecessors, (37), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-12-14 05:31:10,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:31:10,382 INFO L93 Difference]: Finished difference Result 132 states and 191 transitions. [2022-12-14 05:31:10,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-12-14 05:31:10,383 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 34 states have internal predecessors, (37), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Word has length 189 [2022-12-14 05:31:10,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:31:10,383 INFO L225 Difference]: With dead ends: 132 [2022-12-14 05:31:10,384 INFO L226 Difference]: Without dead ends: 124 [2022-12-14 05:31:10,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 475 SyntacticMatches, 9 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 42.3s TimeCoverageRelationStatistics Valid=3383, Invalid=4273, Unknown=0, NotChecked=0, Total=7656 [2022-12-14 05:31:10,384 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 69 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-14 05:31:10,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 93 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-14 05:31:10,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-12-14 05:31:10,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 120. [2022-12-14 05:31:10,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 63 states have internal predecessors, (68), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-12-14 05:31:10,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 178 transitions. [2022-12-14 05:31:10,422 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 178 transitions. Word has length 189 [2022-12-14 05:31:10,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:31:10,422 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 178 transitions. [2022-12-14 05:31:10,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 34 states have internal predecessors, (37), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-12-14 05:31:10,422 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 178 transitions. [2022-12-14 05:31:10,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-12-14 05:31:10,423 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:31:10,423 INFO L195 NwaCegarLoop]: trace histogram [51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:31:10,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-14 05:31:10,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 05:31:10,624 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-14 05:31:10,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:31:10,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1879841700, now seen corresponding path program 1 times [2022-12-14 05:31:10,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:31:10,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376196311] [2022-12-14 05:31:10,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:31:10,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:31:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:31:10,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 8 proven. 42 refuted. 0 times theorem prover too weak. 2500 trivial. 0 not checked. [2022-12-14 05:31:10,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:31:10,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376196311] [2022-12-14 05:31:10,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376196311] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:31:10,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208897420] [2022-12-14 05:31:10,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:31:10,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:31:10,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:31:10,758 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:31:10,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-14 05:31:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:31:10,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 05:31:10,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:31:10,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 8 proven. 42 refuted. 0 times theorem prover too weak. 2500 trivial. 0 not checked. [2022-12-14 05:31:10,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:31:11,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 8 proven. 42 refuted. 0 times theorem prover too weak. 2500 trivial. 0 not checked. [2022-12-14 05:31:11,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208897420] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:31:11,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1449829535] [2022-12-14 05:31:11,078 INFO L159 IcfgInterpreter]: Started Sifa with 90 locations of interest [2022-12-14 05:31:11,078 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:31:11,078 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:31:11,078 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:31:11,078 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:31:19,032 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 8 for LOIs [2022-12-14 05:31:19,032 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:32:00,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1449829535] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:32:00,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:32:00,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [5, 5, 5] total 87 [2022-12-14 05:32:00,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390804357] [2022-12-14 05:32:00,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:32:00,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-12-14 05:32:00,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:32:00,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-12-14 05:32:00,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3383, Invalid=4273, Unknown=0, NotChecked=0, Total=7656 [2022-12-14 05:32:00,556 INFO L87 Difference]: Start difference. First operand 120 states and 178 transitions. Second operand has 82 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 34 states have internal predecessors, (37), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-12-14 05:32:03,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:32:03,472 INFO L93 Difference]: Finished difference Result 144 states and 206 transitions. [2022-12-14 05:32:03,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-12-14 05:32:03,473 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 34 states have internal predecessors, (37), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Word has length 189 [2022-12-14 05:32:03,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:32:03,474 INFO L225 Difference]: With dead ends: 144 [2022-12-14 05:32:03,474 INFO L226 Difference]: Without dead ends: 136 [2022-12-14 05:32:03,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 475 SyntacticMatches, 9 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 41.5s TimeCoverageRelationStatistics Valid=3383, Invalid=4273, Unknown=0, NotChecked=0, Total=7656 [2022-12-14 05:32:03,475 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 76 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1758 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 1766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-14 05:32:03,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 105 Invalid, 1766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1758 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-14 05:32:03,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-12-14 05:32:03,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 125. [2022-12-14 05:32:03,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 67 states have (on average 1.0895522388059702) internal successors, (73), 67 states have internal predecessors, (73), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-12-14 05:32:03,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 185 transitions. [2022-12-14 05:32:03,514 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 185 transitions. Word has length 189 [2022-12-14 05:32:03,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:32:03,514 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 185 transitions. [2022-12-14 05:32:03,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 34 states have internal predecessors, (37), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-12-14 05:32:03,515 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 185 transitions. [2022-12-14 05:32:03,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-12-14 05:32:03,515 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:32:03,515 INFO L195 NwaCegarLoop]: trace histogram [51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:32:03,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-14 05:32:03,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:32:03,717 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-14 05:32:03,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:32:03,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1904949460, now seen corresponding path program 1 times [2022-12-14 05:32:03,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:32:03,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476197528] [2022-12-14 05:32:03,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:32:03,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:32:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:32:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 18 proven. 80 refuted. 0 times theorem prover too weak. 2452 trivial. 0 not checked. [2022-12-14 05:32:03,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:32:03,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476197528] [2022-12-14 05:32:03,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476197528] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:32:03,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623301568] [2022-12-14 05:32:03,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:32:03,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:32:03,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:32:03,846 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:32:03,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-14 05:32:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:32:03,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 05:32:03,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:32:04,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 8 proven. 42 refuted. 0 times theorem prover too weak. 2500 trivial. 0 not checked. [2022-12-14 05:32:04,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:32:04,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 8 proven. 42 refuted. 0 times theorem prover too weak. 2500 trivial. 0 not checked. [2022-12-14 05:32:04,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623301568] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:32:04,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [387441101] [2022-12-14 05:32:04,195 INFO L159 IcfgInterpreter]: Started Sifa with 90 locations of interest [2022-12-14 05:32:04,195 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:32:04,195 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:32:04,195 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:32:04,195 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:32:11,791 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 8 for LOIs [2022-12-14 05:32:11,792 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:32:49,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [387441101] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:32:49,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:32:49,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [5, 5, 5] total 86 [2022-12-14 05:32:49,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044802813] [2022-12-14 05:32:49,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:32:49,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-12-14 05:32:49,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:32:49,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-12-14 05:32:49,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3194, Invalid=4116, Unknown=0, NotChecked=0, Total=7310 [2022-12-14 05:32:49,538 INFO L87 Difference]: Start difference. First operand 125 states and 185 transitions. Second operand has 79 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 31 states have internal predecessors, (37), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-12-14 05:32:51,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:32:51,784 INFO L93 Difference]: Finished difference Result 144 states and 206 transitions. [2022-12-14 05:32:51,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-12-14 05:32:51,785 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 31 states have internal predecessors, (37), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Word has length 189 [2022-12-14 05:32:51,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:32:51,786 INFO L225 Difference]: With dead ends: 144 [2022-12-14 05:32:51,786 INFO L226 Difference]: Without dead ends: 136 [2022-12-14 05:32:51,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 481 SyntacticMatches, 6 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 37.7s TimeCoverageRelationStatistics Valid=3194, Invalid=4116, Unknown=0, NotChecked=0, Total=7310 [2022-12-14 05:32:51,788 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 193 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:32:51,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 84 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-14 05:32:51,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-12-14 05:32:51,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 120. [2022-12-14 05:32:51,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 63 states have internal predecessors, (68), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-12-14 05:32:51,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 178 transitions. [2022-12-14 05:32:51,825 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 178 transitions. Word has length 189 [2022-12-14 05:32:51,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:32:51,825 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 178 transitions. [2022-12-14 05:32:51,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 31 states have internal predecessors, (37), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-12-14 05:32:51,826 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 178 transitions. [2022-12-14 05:32:51,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-12-14 05:32:51,826 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:32:51,826 INFO L195 NwaCegarLoop]: trace histogram [51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:32:51,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-12-14 05:32:52,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:32:52,027 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-14 05:32:52,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:32:52,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1046547224, now seen corresponding path program 1 times [2022-12-14 05:32:52,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:32:52,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800365857] [2022-12-14 05:32:52,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:32:52,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:32:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:32:52,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 4 proven. 46 refuted. 0 times theorem prover too weak. 2500 trivial. 0 not checked. [2022-12-14 05:32:52,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:32:52,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800365857] [2022-12-14 05:32:52,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800365857] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:32:52,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538410125] [2022-12-14 05:32:52,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:32:52,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:32:52,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:32:52,175 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:32:52,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ee7e45-f296-42bb-9645-967d5d643336/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-14 05:32:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:32:52,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 05:32:52,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:32:52,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 8 proven. 42 refuted. 0 times theorem prover too weak. 2500 trivial. 0 not checked. [2022-12-14 05:32:52,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:32:52,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 8 proven. 42 refuted. 0 times theorem prover too weak. 2500 trivial. 0 not checked. [2022-12-14 05:32:52,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538410125] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:32:52,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1348101800] [2022-12-14 05:32:52,621 INFO L159 IcfgInterpreter]: Started Sifa with 92 locations of interest [2022-12-14 05:32:52,621 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:32:52,622 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:32:52,622 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:32:52,622 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:33:01,278 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 8 for LOIs [2022-12-14 05:33:01,279 INFO L180 IcfgInterpreter]: Interpretation finished