./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/xcsp/AllInterval-008.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/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_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/xcsp/AllInterval-008.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/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_3d35b330-3b36-45d6-a5b2-afac2d1a6356/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 8f1a1519dc3ac954bb27ae35f40dd4ee3500f707e2df097fc14441b899353328 --- 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 12:57:24,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:57:24,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:57:24,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:57:24,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:57:24,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:57:24,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:57:24,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:57:24,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:57:24,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:57:24,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:57:24,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:57:24,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:57:24,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:57:24,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:57:24,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:57:24,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:57:24,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:57:24,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:57:24,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:57:24,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:57:24,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:57:24,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:57:24,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:57:24,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:57:24,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:57:24,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:57:24,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:57:24,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:57:24,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:57:24,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:57:24,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:57:24,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:57:24,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:57:24,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:57:24,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:57:24,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:57:24,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:57:24,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:57:24,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:57:24,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:57:24,498 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 12:57:24,515 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:57:24,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:57:24,516 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:57:24,516 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:57:24,517 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:57:24,517 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:57:24,517 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:57:24,517 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:57:24,517 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:57:24,517 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:57:24,517 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:57:24,518 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:57:24,518 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:57:24,518 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:57:24,518 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:57:24,518 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:57:24,518 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:57:24,519 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:57:24,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:57:24,519 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:57:24,519 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 12:57:24,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:57:24,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:57:24,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:57:24,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:57:24,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:57:24,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:57:24,520 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 12:57:24,521 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:57:24,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:57:24,521 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:57:24,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:57:24,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:57:24,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:57:24,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:57:24,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:57:24,522 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:57:24,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:57:24,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:57:24,523 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:57:24,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:57:24,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:57:24,523 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:57:24,523 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_3d35b330-3b36-45d6-a5b2-afac2d1a6356/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f1a1519dc3ac954bb27ae35f40dd4ee3500f707e2df097fc14441b899353328 [2022-12-14 12:57:24,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:57:24,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:57:24,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:57:24,737 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:57:24,737 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:57:24,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/xcsp/AllInterval-008.c [2022-12-14 12:57:27,236 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:57:27,383 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:57:27,383 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/sv-benchmarks/c/xcsp/AllInterval-008.c [2022-12-14 12:57:27,388 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/data/be9cd7553/a513327e646d4aceadb3a68a7ab0f0e6/FLAG978a3c347 [2022-12-14 12:57:27,809 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/data/be9cd7553/a513327e646d4aceadb3a68a7ab0f0e6 [2022-12-14 12:57:27,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:57:27,812 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:57:27,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:57:27,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:57:27,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:57:27,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:57:27" (1/1) ... [2022-12-14 12:57:27,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55528493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:57:27, skipping insertion in model container [2022-12-14 12:57:27,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:57:27" (1/1) ... [2022-12-14 12:57:27,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:57:27,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:57:27,951 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_3d35b330-3b36-45d6-a5b2-afac2d1a6356/sv-benchmarks/c/xcsp/AllInterval-008.c[4334,4347] [2022-12-14 12:57:27,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:57:27,960 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:57:27,982 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_3d35b330-3b36-45d6-a5b2-afac2d1a6356/sv-benchmarks/c/xcsp/AllInterval-008.c[4334,4347] [2022-12-14 12:57:27,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:57:27,992 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:57:27,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:57:27 WrapperNode [2022-12-14 12:57:27,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:57:27,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:57:27,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:57:27,993 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:57:27,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:57:27" (1/1) ... [2022-12-14 12:57:28,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:57:27" (1/1) ... [2022-12-14 12:57:28,022 INFO L138 Inliner]: procedures = 13, calls = 93, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 234 [2022-12-14 12:57:28,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:57:28,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:57:28,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:57:28,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:57:28,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:57:27" (1/1) ... [2022-12-14 12:57:28,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:57:27" (1/1) ... [2022-12-14 12:57:28,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:57:27" (1/1) ... [2022-12-14 12:57:28,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:57:27" (1/1) ... [2022-12-14 12:57:28,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:57:27" (1/1) ... [2022-12-14 12:57:28,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:57:27" (1/1) ... [2022-12-14 12:57:28,039 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:57:27" (1/1) ... [2022-12-14 12:57:28,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:57:27" (1/1) ... [2022-12-14 12:57:28,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:57:28,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:57:28,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:57:28,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:57:28,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:57:27" (1/1) ... [2022-12-14 12:57:28,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:57:28,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:57:28,066 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:57:28,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:57:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:57:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:57:28,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:57:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:57:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2022-12-14 12:57:28,092 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2022-12-14 12:57:28,150 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:57:28,151 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:57:28,447 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:57:28,475 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:57:28,475 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 12:57:28,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:57:28 BoogieIcfgContainer [2022-12-14 12:57:28,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:57:28,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:57:28,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:57:28,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:57:28,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:57:27" (1/3) ... [2022-12-14 12:57:28,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ef03fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:57:28, skipping insertion in model container [2022-12-14 12:57:28,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:57:27" (2/3) ... [2022-12-14 12:57:28,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ef03fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:57:28, skipping insertion in model container [2022-12-14 12:57:28,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:57:28" (3/3) ... [2022-12-14 12:57:28,483 INFO L112 eAbstractionObserver]: Analyzing ICFG AllInterval-008.c [2022-12-14 12:57:28,498 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:57:28,498 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-12-14 12:57:28,540 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:57:28,545 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;@7c2a89fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:57:28,545 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-12-14 12:57:28,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 61 states have (on average 1.5737704918032787) internal successors, (96), 89 states have internal predecessors, (96), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-14 12:57:28,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-12-14 12:57:28,561 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:57:28,562 INFO L195 NwaCegarLoop]: trace histogram [79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:57:28,562 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-14 12:57:28,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:57:28,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1511556133, now seen corresponding path program 1 times [2022-12-14 12:57:28,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:57:28,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651069761] [2022-12-14 12:57:28,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:57:28,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:57:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:57:29,339 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 2 proven. 152 refuted. 0 times theorem prover too weak. 6008 trivial. 0 not checked. [2022-12-14 12:57:29,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:57:29,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651069761] [2022-12-14 12:57:29,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651069761] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:57:29,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042676003] [2022-12-14 12:57:29,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:57:29,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:57:29,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:57:29,342 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:57:29,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 12:57:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:57:29,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 12:57:29,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:57:29,960 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6084 trivial. 0 not checked. [2022-12-14 12:57:29,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:57:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6084 trivial. 0 not checked. [2022-12-14 12:57:30,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042676003] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:57:30,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1045362279] [2022-12-14 12:57:30,305 INFO L159 IcfgInterpreter]: Started Sifa with 100 locations of interest [2022-12-14 12:57:30,305 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:57:30,308 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:57:30,313 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:57:30,313 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:57:50,828 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 8 for LOIs [2022-12-14 12:57:50,829 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:58:56,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1045362279] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:58:56,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:58:56,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [4, 4, 4] total 104 [2022-12-14 12:58:56,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996751606] [2022-12-14 12:58:56,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:58:56,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-12-14 12:58:56,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:58:56,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-12-14 12:58:56,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5236, Invalid=5684, Unknown=0, NotChecked=0, Total=10920 [2022-12-14 12:58:56,535 INFO L87 Difference]: Start difference. First operand has 177 states, 61 states have (on average 1.5737704918032787) internal successors, (96), 89 states have internal predecessors, (96), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 99 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2022-12-14 12:58:58,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:58:58,486 INFO L93 Difference]: Finished difference Result 177 states and 268 transitions. [2022-12-14 12:58:58,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-12-14 12:58:58,488 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Word has length 255 [2022-12-14 12:58:58,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:58:58,495 INFO L225 Difference]: With dead ends: 177 [2022-12-14 12:58:58,495 INFO L226 Difference]: Without dead ends: 159 [2022-12-14 12:58:58,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 768 GetRequests, 664 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 65.7s TimeCoverageRelationStatistics Valid=5236, Invalid=5684, Unknown=0, NotChecked=0, Total=10920 [2022-12-14 12:58:58,500 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 567 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 12:58:58,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 216 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 12:58:58,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-12-14 12:58:58,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2022-12-14 12:58:58,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 59 states have (on average 1.3220338983050848) internal successors, (78), 72 states have internal predecessors, (78), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-12-14 12:58:58,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 248 transitions. [2022-12-14 12:58:58,612 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 248 transitions. Word has length 255 [2022-12-14 12:58:58,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:58:58,615 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 248 transitions. [2022-12-14 12:58:58,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2022-12-14 12:58:58,616 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 248 transitions. [2022-12-14 12:58:58,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-12-14 12:58:58,623 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:58:58,623 INFO L195 NwaCegarLoop]: trace histogram [79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:58,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 12:58:58,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:58:58,826 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-14 12:58:58,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:58:58,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1963470602, now seen corresponding path program 1 times [2022-12-14 12:58:58,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:58:58,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219831208] [2022-12-14 12:58:58,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:58:58,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:58:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:58:59,038 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6162 trivial. 0 not checked. [2022-12-14 12:58:59,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:58:59,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219831208] [2022-12-14 12:58:59,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219831208] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:58:59,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:58:59,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:58:59,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178667770] [2022-12-14 12:58:59,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:58:59,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:58:59,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:58:59,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:58:59,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:58:59,042 INFO L87 Difference]: Start difference. First operand 159 states and 248 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2022-12-14 12:58:59,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:58:59,228 INFO L93 Difference]: Finished difference Result 165 states and 254 transitions. [2022-12-14 12:58:59,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:58:59,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 258 [2022-12-14 12:58:59,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:58:59,232 INFO L225 Difference]: With dead ends: 165 [2022-12-14 12:58:59,232 INFO L226 Difference]: Without dead ends: 158 [2022-12-14 12:58:59,233 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 12:58:59,234 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 20 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:58:59,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 411 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:58:59,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-12-14 12:58:59,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 152. [2022-12-14 12:58:59,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 65 states have internal predecessors, (71), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-12-14 12:58:59,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 241 transitions. [2022-12-14 12:58:59,361 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 241 transitions. Word has length 258 [2022-12-14 12:58:59,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:58:59,363 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 241 transitions. [2022-12-14 12:58:59,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2022-12-14 12:58:59,363 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 241 transitions. [2022-12-14 12:58:59,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-12-14 12:58:59,371 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:58:59,371 INFO L195 NwaCegarLoop]: trace histogram [79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:59,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 12:58:59,372 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-14 12:58:59,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:58:59,373 INFO L85 PathProgramCache]: Analyzing trace with hash 738046658, now seen corresponding path program 1 times [2022-12-14 12:58:59,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:58:59,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467851425] [2022-12-14 12:58:59,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:58:59,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:58:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:58:59,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6084 trivial. 0 not checked. [2022-12-14 12:58:59,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:58:59,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467851425] [2022-12-14 12:58:59,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467851425] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:58:59,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622686068] [2022-12-14 12:58:59,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:58:59,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:58:59,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:58:59,737 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:58:59,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 12:58:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:58:59,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 12:58:59,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:59:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6084 trivial. 0 not checked. [2022-12-14 12:59:00,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:59:00,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6084 trivial. 0 not checked. [2022-12-14 12:59:00,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622686068] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:59:00,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2046997763] [2022-12-14 12:59:00,379 INFO L159 IcfgInterpreter]: Started Sifa with 104 locations of interest [2022-12-14 12:59:00,379 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:59:00,380 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:59:00,380 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:59:00,380 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:59:21,650 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 8 for LOIs [2022-12-14 12:59:21,651 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:00:35,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2046997763] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:00:35,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:00:35,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [5, 5, 5] total 105 [2022-12-14 13:00:35,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462054927] [2022-12-14 13:00:35,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:00:35,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-12-14 13:00:35,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:00:35,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-12-14 13:00:35,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5252, Invalid=5878, Unknown=0, NotChecked=0, Total=11130 [2022-12-14 13:00:35,547 INFO L87 Difference]: Start difference. First operand 152 states and 241 transitions. Second operand has 101 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2022-12-14 13:00:38,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:00:38,085 INFO L93 Difference]: Finished difference Result 153 states and 242 transitions. [2022-12-14 13:00:38,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-12-14 13:00:38,086 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Word has length 259 [2022-12-14 13:00:38,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:00:38,088 INFO L225 Difference]: With dead ends: 153 [2022-12-14 13:00:38,088 INFO L226 Difference]: Without dead ends: 152 [2022-12-14 13:00:38,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 671 SyntacticMatches, 5 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 73.9s TimeCoverageRelationStatistics Valid=5252, Invalid=5878, Unknown=0, NotChecked=0, Total=11130 [2022-12-14 13:00:38,092 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 385 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 13:00:38,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 187 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 13:00:38,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-12-14 13:00:38,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2022-12-14 13:00:38,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 64 states have internal predecessors, (70), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-12-14 13:00:38,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 240 transitions. [2022-12-14 13:00:38,172 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 240 transitions. Word has length 259 [2022-12-14 13:00:38,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:00:38,173 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 240 transitions. [2022-12-14 13:00:38,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2022-12-14 13:00:38,173 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 240 transitions. [2022-12-14 13:00:38,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-12-14 13:00:38,175 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:00:38,176 INFO L195 NwaCegarLoop]: trace histogram [80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:00:38,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 13:00:38,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:00:38,378 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-14 13:00:38,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:00:38,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2057289632, now seen corresponding path program 1 times [2022-12-14 13:00:38,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:00:38,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353248852] [2022-12-14 13:00:38,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:00:38,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:00:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:00:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 2 proven. 77 refuted. 0 times theorem prover too weak. 6241 trivial. 0 not checked. [2022-12-14 13:00:38,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:00:38,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353248852] [2022-12-14 13:00:38,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353248852] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:00:38,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988936193] [2022-12-14 13:00:38,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:00:38,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:00:38,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:00:38,645 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:00:38,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 13:00:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:00:38,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 13:00:38,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:00:38,952 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 2 proven. 77 refuted. 0 times theorem prover too weak. 6241 trivial. 0 not checked. [2022-12-14 13:00:38,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:00:39,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 2 proven. 77 refuted. 0 times theorem prover too weak. 6241 trivial. 0 not checked. [2022-12-14 13:00:39,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988936193] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:00:39,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [662764220] [2022-12-14 13:00:39,149 INFO L159 IcfgInterpreter]: Started Sifa with 109 locations of interest [2022-12-14 13:00:39,149 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:00:39,149 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:00:39,149 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:00:39,149 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:01:00,833 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 56 for LOIs [2022-12-14 13:01:00,845 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:02:22,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [662764220] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:02:22,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:02:22,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [5, 5, 5] total 109 [2022-12-14 13:02:22,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413218553] [2022-12-14 13:02:22,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:02:22,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-12-14 13:02:22,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:02:22,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-12-14 13:02:22,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5656, Invalid=6334, Unknown=0, NotChecked=0, Total=11990 [2022-12-14 13:02:22,936 INFO L87 Difference]: Start difference. First operand 151 states and 240 transitions. Second operand has 105 states, 23 states have (on average 1.173913043478261) internal successors, (27), 25 states have internal predecessors, (27), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2022-12-14 13:02:26,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:02:26,145 INFO L93 Difference]: Finished difference Result 161 states and 252 transitions. [2022-12-14 13:02:26,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-12-14 13:02:26,146 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 23 states have (on average 1.173913043478261) internal successors, (27), 25 states have internal predecessors, (27), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Word has length 266 [2022-12-14 13:02:26,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:02:26,148 INFO L225 Difference]: With dead ends: 161 [2022-12-14 13:02:26,148 INFO L226 Difference]: Without dead ends: 160 [2022-12-14 13:02:26,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 687 SyntacticMatches, 6 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 82.0s TimeCoverageRelationStatistics Valid=5656, Invalid=6334, Unknown=0, NotChecked=0, Total=11990 [2022-12-14 13:02:26,150 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 290 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:02:26,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 187 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-14 13:02:26,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-12-14 13:02:26,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2022-12-14 13:02:26,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 70 states have internal predecessors, (77), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-14 13:02:26,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 249 transitions. [2022-12-14 13:02:26,223 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 249 transitions. Word has length 266 [2022-12-14 13:02:26,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:02:26,223 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 249 transitions. [2022-12-14 13:02:26,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 23 states have (on average 1.173913043478261) internal successors, (27), 25 states have internal predecessors, (27), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2022-12-14 13:02:26,224 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 249 transitions. [2022-12-14 13:02:26,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-12-14 13:02:26,225 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:02:26,225 INFO L195 NwaCegarLoop]: trace histogram [80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:02:26,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 13:02:26,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:02:26,427 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-14 13:02:26,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:02:26,428 INFO L85 PathProgramCache]: Analyzing trace with hash 955464412, now seen corresponding path program 1 times [2022-12-14 13:02:26,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:02:26,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275945326] [2022-12-14 13:02:26,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:02:26,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:02:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:02:26,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 2 proven. 77 refuted. 0 times theorem prover too weak. 6241 trivial. 0 not checked. [2022-12-14 13:02:26,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:02:26,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275945326] [2022-12-14 13:02:26,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275945326] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:02:26,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762515698] [2022-12-14 13:02:26,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:02:26,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:02:26,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:02:26,694 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:02:26,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 13:02:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:02:26,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 13:02:26,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:02:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 2 proven. 77 refuted. 0 times theorem prover too weak. 6241 trivial. 0 not checked. [2022-12-14 13:02:27,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:02:27,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 2 proven. 77 refuted. 0 times theorem prover too weak. 6241 trivial. 0 not checked. [2022-12-14 13:02:27,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762515698] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:02:27,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1909377828] [2022-12-14 13:02:27,219 INFO L159 IcfgInterpreter]: Started Sifa with 111 locations of interest [2022-12-14 13:02:27,219 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:02:27,220 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:02:27,220 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:02:27,220 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:02:48,240 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 56 for LOIs [2022-12-14 13:02:48,249 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:04:11,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1909377828] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:04:11,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:04:11,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [5, 5, 5] total 110 [2022-12-14 13:04:11,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901692626] [2022-12-14 13:04:11,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:04:11,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2022-12-14 13:04:11,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:04:11,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2022-12-14 13:04:11,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5757, Invalid=6453, Unknown=0, NotChecked=0, Total=12210 [2022-12-14 13:04:11,079 INFO L87 Difference]: Start difference. First operand 158 states and 249 transitions. Second operand has 106 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2022-12-14 13:04:14,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:04:14,572 INFO L93 Difference]: Finished difference Result 160 states and 251 transitions. [2022-12-14 13:04:14,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-12-14 13:04:14,573 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Word has length 268 [2022-12-14 13:04:14,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:04:14,574 INFO L225 Difference]: With dead ends: 160 [2022-12-14 13:04:14,574 INFO L226 Difference]: Without dead ends: 159 [2022-12-14 13:04:14,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 691 SyntacticMatches, 7 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 82.8s TimeCoverageRelationStatistics Valid=5757, Invalid=6453, Unknown=0, NotChecked=0, Total=12210 [2022-12-14 13:04:14,576 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 148 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-14 13:04:14,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 178 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-14 13:04:14,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-12-14 13:04:14,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 150. [2022-12-14 13:04:14,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 63 states have internal predecessors, (69), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-12-14 13:04:14,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 239 transitions. [2022-12-14 13:04:14,646 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 239 transitions. Word has length 268 [2022-12-14 13:04:14,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:04:14,647 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 239 transitions. [2022-12-14 13:04:14,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2022-12-14 13:04:14,647 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 239 transitions. [2022-12-14 13:04:14,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-12-14 13:04:14,648 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:04:14,648 INFO L195 NwaCegarLoop]: trace histogram [81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:04:14,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 13:04:14,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:04:14,851 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-14 13:04:14,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:04:14,852 INFO L85 PathProgramCache]: Analyzing trace with hash -887138786, now seen corresponding path program 1 times [2022-12-14 13:04:14,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:04:14,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387280507] [2022-12-14 13:04:14,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:14,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:04:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:15,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 4 proven. 76 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2022-12-14 13:04:15,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:04:15,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387280507] [2022-12-14 13:04:15,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387280507] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:04:15,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803457076] [2022-12-14 13:04:15,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:15,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:04:15,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:04:15,057 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:04:15,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 13:04:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:15,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 13:04:15,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:04:15,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 4 proven. 76 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2022-12-14 13:04:15,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:04:15,637 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 4 proven. 76 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2022-12-14 13:04:15,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803457076] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:04:15,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [782885487] [2022-12-14 13:04:15,639 INFO L159 IcfgInterpreter]: Started Sifa with 114 locations of interest [2022-12-14 13:04:15,639 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:04:15,639 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:04:15,639 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:04:15,639 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:04:37,232 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 8 for LOIs [2022-12-14 13:04:37,233 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:06:09,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [782885487] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:06:09,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:06:09,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [5, 5, 5] total 113 [2022-12-14 13:06:09,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175754007] [2022-12-14 13:06:09,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:06:09,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2022-12-14 13:06:09,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:06:09,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2022-12-14 13:06:09,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6060, Invalid=6822, Unknown=0, NotChecked=0, Total=12882 [2022-12-14 13:06:09,128 INFO L87 Difference]: Start difference. First operand 150 states and 239 transitions. Second operand has 109 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 29 states have internal predecessors, (31), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2022-12-14 13:06:13,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:06:13,435 INFO L93 Difference]: Finished difference Result 168 states and 261 transitions. [2022-12-14 13:06:13,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-12-14 13:06:13,436 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 29 states have internal predecessors, (31), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Word has length 273 [2022-12-14 13:06:13,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:06:13,437 INFO L225 Difference]: With dead ends: 168 [2022-12-14 13:06:13,437 INFO L226 Difference]: Without dead ends: 167 [2022-12-14 13:06:13,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 703 SyntacticMatches, 7 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 91.8s TimeCoverageRelationStatistics Valid=6060, Invalid=6822, Unknown=0, NotChecked=0, Total=12882 [2022-12-14 13:06:13,439 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 209 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:06:13,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 176 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1682 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-12-14 13:06:13,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-12-14 13:06:13,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 162. [2022-12-14 13:06:13,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 69 states have (on average 1.173913043478261) internal successors, (81), 73 states have internal predecessors, (81), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2022-12-14 13:06:13,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 255 transitions. [2022-12-14 13:06:13,512 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 255 transitions. Word has length 273 [2022-12-14 13:06:13,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:06:13,512 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 255 transitions. [2022-12-14 13:06:13,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 29 states have internal predecessors, (31), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2022-12-14 13:06:13,513 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 255 transitions. [2022-12-14 13:06:13,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-12-14 13:06:13,514 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:06:13,514 INFO L195 NwaCegarLoop]: trace histogram [81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:06:13,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 13:06:13,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 13:06:13,716 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-14 13:06:13,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:06:13,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1578451238, now seen corresponding path program 1 times [2022-12-14 13:06:13,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:06:13,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506824721] [2022-12-14 13:06:13,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:06:13,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:06:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:06:13,964 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 4 proven. 76 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2022-12-14 13:06:13,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:06:13,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506824721] [2022-12-14 13:06:13,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506824721] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:06:13,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251415580] [2022-12-14 13:06:13,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:06:13,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:06:13,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:06:13,966 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:06:13,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 13:06:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:06:14,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 13:06:14,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:06:14,330 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 4 proven. 76 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2022-12-14 13:06:14,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:06:14,581 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 4 proven. 76 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2022-12-14 13:06:14,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251415580] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:06:14,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [528202207] [2022-12-14 13:06:14,584 INFO L159 IcfgInterpreter]: Started Sifa with 116 locations of interest [2022-12-14 13:06:14,584 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:06:14,584 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:06:14,584 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:06:14,584 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:06:36,695 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 8 for LOIs [2022-12-14 13:06:36,695 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:08:09,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [528202207] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:08:09,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:08:09,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [5, 5, 5] total 114 [2022-12-14 13:08:09,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040567597] [2022-12-14 13:08:09,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:08:09,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-12-14 13:08:09,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:08:09,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-12-14 13:08:09,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6161, Invalid=6949, Unknown=0, NotChecked=0, Total=13110 [2022-12-14 13:08:09,464 INFO L87 Difference]: Start difference. First operand 162 states and 255 transitions. Second operand has 110 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 30 states have internal predecessors, (33), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2022-12-14 13:08:13,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:08:13,806 INFO L93 Difference]: Finished difference Result 174 states and 269 transitions. [2022-12-14 13:08:13,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-12-14 13:08:13,807 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 30 states have internal predecessors, (33), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Word has length 275 [2022-12-14 13:08:13,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:08:13,808 INFO L225 Difference]: With dead ends: 174 [2022-12-14 13:08:13,809 INFO L226 Difference]: Without dead ends: 173 [2022-12-14 13:08:13,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 707 SyntacticMatches, 8 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 92.7s TimeCoverageRelationStatistics Valid=6161, Invalid=6949, Unknown=0, NotChecked=0, Total=13110 [2022-12-14 13:08:13,810 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 100 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 1871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:08:13,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 188 Invalid, 1871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1859 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-14 13:08:13,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-12-14 13:08:13,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 164. [2022-12-14 13:08:13,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 75 states have internal predecessors, (83), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2022-12-14 13:08:13,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 257 transitions. [2022-12-14 13:08:13,886 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 257 transitions. Word has length 275 [2022-12-14 13:08:13,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:08:13,886 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 257 transitions. [2022-12-14 13:08:13,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 30 states have internal predecessors, (33), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2022-12-14 13:08:13,886 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 257 transitions. [2022-12-14 13:08:13,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-12-14 13:08:13,887 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:08:13,888 INFO L195 NwaCegarLoop]: trace histogram [81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:13,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 13:08:14,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 13:08:14,090 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-14 13:08:14,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:08:14,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1656880994, now seen corresponding path program 1 times [2022-12-14 13:08:14,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:08:14,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239294819] [2022-12-14 13:08:14,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:08:14,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:08:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:08:14,263 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 4 proven. 76 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2022-12-14 13:08:14,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:08:14,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239294819] [2022-12-14 13:08:14,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239294819] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:08:14,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498248880] [2022-12-14 13:08:14,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:08:14,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:08:14,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:08:14,265 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:08:14,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 13:08:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:08:14,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 13:08:14,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:08:14,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 4 proven. 76 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2022-12-14 13:08:14,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:08:14,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 4 proven. 76 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2022-12-14 13:08:14,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498248880] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:08:14,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [662606397] [2022-12-14 13:08:14,767 INFO L159 IcfgInterpreter]: Started Sifa with 116 locations of interest [2022-12-14 13:08:14,767 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:08:14,767 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:08:14,768 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:08:14,768 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:08:37,159 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 8 for LOIs [2022-12-14 13:08:37,159 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:10:11,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [662606397] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:10:11,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:10:11,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [5, 5, 5] total 114 [2022-12-14 13:10:11,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140409648] [2022-12-14 13:10:11,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:10:11,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-12-14 13:10:11,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:10:11,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-12-14 13:10:11,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6161, Invalid=6949, Unknown=0, NotChecked=0, Total=13110 [2022-12-14 13:10:11,038 INFO L87 Difference]: Start difference. First operand 164 states and 257 transitions. Second operand has 110 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 30 states have internal predecessors, (33), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2022-12-14 13:10:14,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:10:14,810 INFO L93 Difference]: Finished difference Result 174 states and 269 transitions. [2022-12-14 13:10:14,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-12-14 13:10:14,811 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 30 states have internal predecessors, (33), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Word has length 275 [2022-12-14 13:10:14,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:10:14,812 INFO L225 Difference]: With dead ends: 174 [2022-12-14 13:10:14,812 INFO L226 Difference]: Without dead ends: 173 [2022-12-14 13:10:14,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 707 SyntacticMatches, 8 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 93.8s TimeCoverageRelationStatistics Valid=6161, Invalid=6949, Unknown=0, NotChecked=0, Total=13110 [2022-12-14 13:10:14,813 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 352 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-14 13:10:14,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 168 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-14 13:10:14,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-12-14 13:10:14,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 164. [2022-12-14 13:10:14,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 75 states have internal predecessors, (83), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2022-12-14 13:10:14,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 257 transitions. [2022-12-14 13:10:14,886 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 257 transitions. Word has length 275 [2022-12-14 13:10:14,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:10:14,886 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 257 transitions. [2022-12-14 13:10:14,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 30 states have internal predecessors, (33), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2022-12-14 13:10:14,886 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 257 transitions. [2022-12-14 13:10:14,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-12-14 13:10:14,887 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:10:14,888 INFO L195 NwaCegarLoop]: trace histogram [81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:14,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-14 13:10:15,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:10:15,090 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-14 13:10:15,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:10:15,091 INFO L85 PathProgramCache]: Analyzing trace with hash -611834082, now seen corresponding path program 1 times [2022-12-14 13:10:15,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:10:15,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504484265] [2022-12-14 13:10:15,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:10:15,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:10:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:10:15,276 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 4 proven. 76 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2022-12-14 13:10:15,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:10:15,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504484265] [2022-12-14 13:10:15,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504484265] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:10:15,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458046148] [2022-12-14 13:10:15,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:10:15,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:10:15,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:10:15,277 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:10:15,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d35b330-3b36-45d6-a5b2-afac2d1a6356/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 13:10:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:10:15,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 13:10:15,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:10:15,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2022-12-14 13:10:15,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:10:15,928 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2022-12-14 13:10:15,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458046148] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:10:15,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [329086923] [2022-12-14 13:10:15,930 INFO L159 IcfgInterpreter]: Started Sifa with 118 locations of interest [2022-12-14 13:10:15,930 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:10:15,931 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:10:15,931 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:10:15,931 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:10:37,793 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 8 for LOIs [2022-12-14 13:10:37,794 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:12:19,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [329086923] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:12:19,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:12:19,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [109] imperfect sequences [5, 9, 9] total 126 [2022-12-14 13:12:19,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855147192] [2022-12-14 13:12:19,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:12:19,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-12-14 13:12:19,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:12:19,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-12-14 13:12:19,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6943, Invalid=9059, Unknown=0, NotChecked=0, Total=16002 [2022-12-14 13:12:19,049 INFO L87 Difference]: Start difference. First operand 164 states and 257 transitions. Second operand has 111 states, 28 states have (on average 1.25) internal successors, (35), 31 states have internal predecessors, (35), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81)