./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/McCarthy91_Recursion.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e54f21-ffff-4532-94b5-94c7f21310f6/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e54f21-ffff-4532-94b5-94c7f21310f6/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e54f21-ffff-4532-94b5-94c7f21310f6/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e54f21-ffff-4532-94b5-94c7f21310f6/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/McCarthy91_Recursion.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e54f21-ffff-4532-94b5-94c7f21310f6/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e54f21-ffff-4532-94b5-94c7f21310f6/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b4d53423478efbe88c69a2c2de1bb984f61e7e586fd7bb6761452f26ace425f7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:40:32,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:40:32,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:40:32,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:40:32,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:40:32,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:40:32,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:40:32,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:40:32,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:40:32,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:40:32,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:40:32,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:40:32,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:40:32,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:40:32,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:40:32,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:40:32,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:40:32,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:40:32,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:40:32,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:40:32,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:40:32,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:40:32,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:40:32,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:40:32,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:40:32,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:40:32,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:40:32,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:40:32,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:40:32,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:40:32,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:40:32,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:40:32,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:40:32,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:40:32,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:40:32,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:40:32,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:40:32,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:40:32,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:40:32,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:40:32,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:40:32,468 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e54f21-ffff-4532-94b5-94c7f21310f6/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-03 01:40:32,497 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:40:32,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:40:32,498 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:40:32,499 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:40:32,500 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:40:32,500 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:40:32,500 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:40:32,501 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:40:32,501 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:40:32,501 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:40:32,502 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:40:32,502 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:40:32,502 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:40:32,503 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:40:32,503 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:40:32,503 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:40:32,504 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:40:32,504 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:40:32,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:40:32,505 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 01:40:32,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:40:32,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:40:32,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:40:32,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:40:32,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:40:32,507 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-03 01:40:32,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:40:32,508 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:40:32,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:40:32,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:40:32,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:40:32,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:40:32,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:40:32,509 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:40:32,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:40:32,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:40:32,510 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:40:32,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:40:32,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:40:32,511 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:40:32,511 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_92e54f21-ffff-4532-94b5-94c7f21310f6/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e54f21-ffff-4532-94b5-94c7f21310f6/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4d53423478efbe88c69a2c2de1bb984f61e7e586fd7bb6761452f26ace425f7 [2022-11-03 01:40:32,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:40:32,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:40:32,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:40:32,968 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:40:32,969 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:40:32,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e54f21-ffff-4532-94b5-94c7f21310f6/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/termination-crafted/McCarthy91_Recursion.c [2022-11-03 01:40:33,057 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e54f21-ffff-4532-94b5-94c7f21310f6/bin/utaipan-7li7fVZpFI/data/c735445d6/1781cf9226bb4709a14e3f4c19ec75fd/FLAG8334680d5 [2022-11-03 01:40:33,740 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:40:33,741 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e54f21-ffff-4532-94b5-94c7f21310f6/sv-benchmarks/c/termination-crafted/McCarthy91_Recursion.c [2022-11-03 01:40:33,751 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e54f21-ffff-4532-94b5-94c7f21310f6/bin/utaipan-7li7fVZpFI/data/c735445d6/1781cf9226bb4709a14e3f4c19ec75fd/FLAG8334680d5 [2022-11-03 01:40:34,106 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e54f21-ffff-4532-94b5-94c7f21310f6/bin/utaipan-7li7fVZpFI/data/c735445d6/1781cf9226bb4709a14e3f4c19ec75fd [2022-11-03 01:40:34,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:40:34,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:40:34,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:40:34,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:40:34,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:40:34,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:40:34" (1/1) ... [2022-11-03 01:40:34,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6506e65a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:34, skipping insertion in model container [2022-11-03 01:40:34,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:40:34" (1/1) ... [2022-11-03 01:40:34,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:40:34,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:40:34,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:40:34,371 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:40:34,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:40:34,405 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:40:34,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:34 WrapperNode [2022-11-03 01:40:34,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:40:34,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:40:34,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:40:34,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:40:34,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:34" (1/1) ... [2022-11-03 01:40:34,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:34" (1/1) ... [2022-11-03 01:40:34,445 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 8 [2022-11-03 01:40:34,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:40:34,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:40:34,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:40:34,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:40:34,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:34" (1/1) ... [2022-11-03 01:40:34,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:34" (1/1) ... [2022-11-03 01:40:34,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:34" (1/1) ... [2022-11-03 01:40:34,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:34" (1/1) ... [2022-11-03 01:40:34,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:34" (1/1) ... [2022-11-03 01:40:34,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:34" (1/1) ... [2022-11-03 01:40:34,472 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:34" (1/1) ... [2022-11-03 01:40:34,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:34" (1/1) ... [2022-11-03 01:40:34,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:40:34,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:40:34,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:40:34,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:40:34,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:34" (1/1) ... [2022-11-03 01:40:34,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:40:34,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e54f21-ffff-4532-94b5-94c7f21310f6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:40:34,538 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e54f21-ffff-4532-94b5-94c7f21310f6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:40:34,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e54f21-ffff-4532-94b5-94c7f21310f6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:40:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:40:34,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:40:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure mc91 [2022-11-03 01:40:34,593 INFO L138 BoogieDeclarations]: Found implementation of procedure mc91 [2022-11-03 01:40:34,664 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:40:34,667 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:40:34,842 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:40:34,863 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:40:34,867 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:40:34,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:40:34 BoogieIcfgContainer [2022-11-03 01:40:34,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:40:34,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:40:34,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:40:34,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:40:34,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:40:34" (1/3) ... [2022-11-03 01:40:34,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@741d3c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:40:34, skipping insertion in model container [2022-11-03 01:40:34,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:34" (2/3) ... [2022-11-03 01:40:34,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@741d3c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:40:34, skipping insertion in model container [2022-11-03 01:40:34,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:40:34" (3/3) ... [2022-11-03 01:40:34,883 INFO L112 eAbstractionObserver]: Analyzing ICFG McCarthy91_Recursion.c [2022-11-03 01:40:34,908 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:40:34,908 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-03 01:40:34,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:40:34,981 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;@2fe9a6db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:40:34,982 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-03 01:40:34,988 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 15 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:40:34,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 01:40:34,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:34,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 01:40:35,000 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-03 01:40:35,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:35,016 INFO L85 PathProgramCache]: Analyzing trace with hash 58964590, now seen corresponding path program 1 times [2022-11-03 01:40:35,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:35,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826477641] [2022-11-03 01:40:35,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:35,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:35,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:35,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826477641] [2022-11-03 01:40:35,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826477641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:35,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:35,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:40:35,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539503201] [2022-11-03 01:40:35,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:35,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:40:35,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:35,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:40:35,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:40:35,350 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 15 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:35,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:35,457 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2022-11-03 01:40:35,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:40:35,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-03 01:40:35,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:35,471 INFO L225 Difference]: With dead ends: 22 [2022-11-03 01:40:35,478 INFO L226 Difference]: Without dead ends: 19 [2022-11-03 01:40:35,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:40:35,509 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:35,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 24 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:40:35,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-03 01:40:35,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2022-11-03 01:40:35,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:40:35,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-11-03 01:40:35,600 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 5 [2022-11-03 01:40:35,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:35,601 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-11-03 01:40:35,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:35,602 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-11-03 01:40:35,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 01:40:35,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:35,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 01:40:35,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:40:35,604 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-03 01:40:35,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:35,606 INFO L85 PathProgramCache]: Analyzing trace with hash 58964430, now seen corresponding path program 1 times [2022-11-03 01:40:35,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:35,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887100366] [2022-11-03 01:40:35,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:35,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:35,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:35,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:35,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887100366] [2022-11-03 01:40:35,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887100366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:35,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:35,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:40:35,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653400653] [2022-11-03 01:40:35,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:35,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:40:35,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:35,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:40:35,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:40:35,737 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:35,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:35,843 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2022-11-03 01:40:35,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:40:35,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-03 01:40:35,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:35,846 INFO L225 Difference]: With dead ends: 34 [2022-11-03 01:40:35,846 INFO L226 Difference]: Without dead ends: 30 [2022-11-03 01:40:35,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:40:35,849 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 28 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:35,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 37 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:40:35,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-03 01:40:35,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2022-11-03 01:40:35,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:40:35,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-11-03 01:40:35,861 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 5 [2022-11-03 01:40:35,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:35,861 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-11-03 01:40:35,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:35,862 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-11-03 01:40:35,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 01:40:35,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:35,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 01:40:35,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:40:35,864 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-03 01:40:35,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:35,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1827902340, now seen corresponding path program 1 times [2022-11-03 01:40:35,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:35,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513302681] [2022-11-03 01:40:35,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:35,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:35,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:35,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:35,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513302681] [2022-11-03 01:40:35,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513302681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:35,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:35,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:40:35,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114810981] [2022-11-03 01:40:35,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:35,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:40:35,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:35,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:40:35,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:40:35,958 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:36,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:36,056 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2022-11-03 01:40:36,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:40:36,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-03 01:40:36,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:36,059 INFO L225 Difference]: With dead ends: 43 [2022-11-03 01:40:36,059 INFO L226 Difference]: Without dead ends: 42 [2022-11-03 01:40:36,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:40:36,062 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 26 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:36,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 28 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:40:36,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-03 01:40:36,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2022-11-03 01:40:36,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 29 states have internal predecessors, (34), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-03 01:40:36,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-11-03 01:40:36,088 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 6 [2022-11-03 01:40:36,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:36,089 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-11-03 01:40:36,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:36,089 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-11-03 01:40:36,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 01:40:36,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:36,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 01:40:36,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:40:36,091 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-03 01:40:36,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:36,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1827897375, now seen corresponding path program 1 times [2022-11-03 01:40:36,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:36,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71537396] [2022-11-03 01:40:36,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:36,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:36,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:36,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:36,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71537396] [2022-11-03 01:40:36,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71537396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:36,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:36,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:40:36,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912504550] [2022-11-03 01:40:36,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:36,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:40:36,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:36,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:40:36,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:40:36,161 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:36,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:36,192 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2022-11-03 01:40:36,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:40:36,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-03 01:40:36,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:36,194 INFO L225 Difference]: With dead ends: 42 [2022-11-03 01:40:36,194 INFO L226 Difference]: Without dead ends: 39 [2022-11-03 01:40:36,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:40:36,197 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 3 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:36,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 19 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:40:36,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-03 01:40:36,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2022-11-03 01:40:36,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-03 01:40:36,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-11-03 01:40:36,236 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 6 [2022-11-03 01:40:36,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:36,237 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-11-03 01:40:36,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:36,238 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-11-03 01:40:36,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 01:40:36,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:36,239 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:36,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:40:36,241 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-03 01:40:36,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:36,242 INFO L85 PathProgramCache]: Analyzing trace with hash -632216878, now seen corresponding path program 1 times [2022-11-03 01:40:36,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:36,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496783664] [2022-11-03 01:40:36,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:36,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:36,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:36,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:36,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496783664] [2022-11-03 01:40:36,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496783664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:36,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:36,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:40:36,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273353143] [2022-11-03 01:40:36,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:36,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:40:36,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:36,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:40:36,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:40:36,384 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:36,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:36,510 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2022-11-03 01:40:36,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:40:36,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-03 01:40:36,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:36,513 INFO L225 Difference]: With dead ends: 55 [2022-11-03 01:40:36,513 INFO L226 Difference]: Without dead ends: 54 [2022-11-03 01:40:36,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:36,514 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 24 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:36,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 34 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:40:36,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-03 01:40:36,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2022-11-03 01:40:36,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 35 states have internal predecessors, (39), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-03 01:40:36,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2022-11-03 01:40:36,543 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 10 [2022-11-03 01:40:36,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:36,544 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2022-11-03 01:40:36,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:36,547 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2022-11-03 01:40:36,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 01:40:36,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:36,548 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:36,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:40:36,550 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-03 01:40:36,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:36,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1209771039, now seen corresponding path program 1 times [2022-11-03 01:40:36,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:36,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273399135] [2022-11-03 01:40:36,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:36,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:36,763 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:40:36,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:36,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273399135] [2022-11-03 01:40:36,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273399135] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:40:36,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240762668] [2022-11-03 01:40:36,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:36,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:40:36,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e54f21-ffff-4532-94b5-94c7f21310f6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:40:36,770 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e54f21-ffff-4532-94b5-94c7f21310f6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:40:36,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e54f21-ffff-4532-94b5-94c7f21310f6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:40:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:36,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 01:40:36,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:40:37,008 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:37,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:40:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:37,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240762668] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:40:37,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [479752648] [2022-11-03 01:40:37,342 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-03 01:40:37,343 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:40:37,348 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 01:40:37,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:40:37,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 21 [2022-11-03 01:40:37,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954804893] [2022-11-03 01:40:37,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:40:37,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-03 01:40:37,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:37,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-03 01:40:37,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2022-11-03 01:40:37,360 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:40:38,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:38,297 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2022-11-03 01:40:38,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 01:40:38,299 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 18 [2022-11-03 01:40:38,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:38,312 INFO L225 Difference]: With dead ends: 83 [2022-11-03 01:40:38,312 INFO L226 Difference]: Without dead ends: 82 [2022-11-03 01:40:38,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=486, Invalid=1320, Unknown=0, NotChecked=0, Total=1806 [2022-11-03 01:40:38,322 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 235 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:38,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 26 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:40:38,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-03 01:40:38,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 46. [2022-11-03 01:40:38,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-03 01:40:38,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2022-11-03 01:40:38,342 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 18 [2022-11-03 01:40:38,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:38,343 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2022-11-03 01:40:38,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:40:38,343 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2022-11-03 01:40:38,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 01:40:38,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:38,344 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:38,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e54f21-ffff-4532-94b5-94c7f21310f6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 01:40:38,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e54f21-ffff-4532-94b5-94c7f21310f6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:40:38,555 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-03 01:40:38,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:38,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1151808465, now seen corresponding path program 1 times [2022-11-03 01:40:38,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:38,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539904455] [2022-11-03 01:40:38,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:38,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:38,702 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:40:38,703 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:38,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539904455] [2022-11-03 01:40:38,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539904455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:38,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:38,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:40:38,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593382276] [2022-11-03 01:40:38,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:38,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:40:38,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:38,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:40:38,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:38,706 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:40:38,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:38,873 INFO L93 Difference]: Finished difference Result 98 states and 127 transitions. [2022-11-03 01:40:38,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:40:38,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-11-03 01:40:38,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:38,875 INFO L225 Difference]: With dead ends: 98 [2022-11-03 01:40:38,876 INFO L226 Difference]: Without dead ends: 97 [2022-11-03 01:40:38,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:40:38,878 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:38,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 52 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:40:38,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-03 01:40:38,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2022-11-03 01:40:38,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 64 states have internal predecessors, (67), 19 states have call successors, (19), 6 states have call predecessors, (19), 8 states have return successors, (22), 17 states have call predecessors, (22), 16 states have call successors, (22) [2022-11-03 01:40:38,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2022-11-03 01:40:38,900 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 19 [2022-11-03 01:40:38,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:38,901 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2022-11-03 01:40:38,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:40:38,901 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2022-11-03 01:40:38,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 01:40:38,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:38,903 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-03 01:40:38,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:40:38,904 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-03 01:40:38,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:38,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1937492778, now seen corresponding path program 1 times [2022-11-03 01:40:38,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:38,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722413705] [2022-11-03 01:40:38,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:38,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:39,100 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-03 01:40:39,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:39,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722413705] [2022-11-03 01:40:39,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722413705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:39,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:39,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:40:39,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226063791] [2022-11-03 01:40:39,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:39,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:40:39,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:39,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:40:39,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:40:39,105 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:40:39,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:39,367 INFO L93 Difference]: Finished difference Result 92 states and 120 transitions. [2022-11-03 01:40:39,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:40:39,369 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2022-11-03 01:40:39,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:39,371 INFO L225 Difference]: With dead ends: 92 [2022-11-03 01:40:39,371 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 01:40:39,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:40:39,383 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:39,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 46 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:40:39,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 01:40:39,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 01:40:39,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:39,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 01:40:39,387 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2022-11-03 01:40:39,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:39,387 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 01:40:39,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:40:39,388 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 01:40:39,388 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 01:40:39,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-03 01:40:39,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-03 01:40:39,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-11-03 01:40:39,394 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-11-03 01:40:39,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 01:40:39,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 01:40:39,755 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 01:40:39,756 INFO L895 garLoopResultBuilder]: At program point L16(line 16) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648))) [2022-11-03 01:40:39,756 INFO L899 garLoopResultBuilder]: For program point L16-1(line 16) no Hoare annotation was computed. [2022-11-03 01:40:39,756 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-03 01:40:39,756 INFO L899 garLoopResultBuilder]: For program point mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 11) no Hoare annotation was computed. [2022-11-03 01:40:39,756 INFO L899 garLoopResultBuilder]: For program point mc91FINAL(lines 8 12) no Hoare annotation was computed. [2022-11-03 01:40:39,757 INFO L899 garLoopResultBuilder]: For program point mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 11) no Hoare annotation was computed. [2022-11-03 01:40:39,757 INFO L899 garLoopResultBuilder]: For program point mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2022-11-03 01:40:39,757 INFO L899 garLoopResultBuilder]: For program point mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2022-11-03 01:40:39,757 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2022-11-03 01:40:39,758 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 11) no Hoare annotation was computed. [2022-11-03 01:40:39,758 INFO L899 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2022-11-03 01:40:39,758 INFO L899 garLoopResultBuilder]: For program point L10-1(line 10) no Hoare annotation was computed. [2022-11-03 01:40:39,758 INFO L895 garLoopResultBuilder]: At program point L11-2(line 11) the Hoare annotation is: (and (or (and (<= 91 mc91_~n) (<= mc91_~n 100)) (not (<= 91 |mc91_#in~n|)) (not (<= |mc91_#in~n| 2147483648))) (or (and (<= 0 (+ mc91_~n 2147483648)) (<= mc91_~n |mc91_#in~n|)) (not (<= 0 (+ |mc91_#in~n| 2147483648))) (not (<= |mc91_#in~n| 2147483647)))) [2022-11-03 01:40:39,758 INFO L899 garLoopResultBuilder]: For program point L10-2(line 10) no Hoare annotation was computed. [2022-11-03 01:40:39,759 INFO L899 garLoopResultBuilder]: For program point L11-3(line 11) no Hoare annotation was computed. [2022-11-03 01:40:39,759 INFO L895 garLoopResultBuilder]: At program point L11-4(line 11) the Hoare annotation is: (let ((.cse0 (<= 91 |mc91_#t~ret0|)) (.cse1 (<= |mc91_#t~ret0| 2147483648))) (and (or (not (<= 91 |mc91_#in~n|)) (and (<= 91 mc91_~n) (<= mc91_~n 100) .cse0 .cse1) (not (<= |mc91_#in~n| 2147483648))) (or (and (<= 0 (+ mc91_~n 2147483648)) (<= mc91_~n |mc91_#in~n|) .cse0 .cse1) (not (<= 0 (+ |mc91_#in~n| 2147483648))) (not (<= |mc91_#in~n| 2147483647))))) [2022-11-03 01:40:39,759 INFO L902 garLoopResultBuilder]: At program point mc91ENTRY(lines 8 12) the Hoare annotation is: true [2022-11-03 01:40:39,759 INFO L899 garLoopResultBuilder]: For program point L11-5(line 11) no Hoare annotation was computed. [2022-11-03 01:40:39,760 INFO L899 garLoopResultBuilder]: For program point mc91EXIT(lines 8 12) no Hoare annotation was computed. [2022-11-03 01:40:39,763 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:39,767 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 01:40:39,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:40:39 BoogieIcfgContainer [2022-11-03 01:40:39,774 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 01:40:39,775 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 01:40:39,776 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 01:40:39,776 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 01:40:39,777 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:40:34" (3/4) ... [2022-11-03 01:40:39,780 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 01:40:39,788 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure mc91 [2022-11-03 01:40:39,794 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-11-03 01:40:39,795 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-03 01:40:39,795 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-03 01:40:39,830 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e54f21-ffff-4532-94b5-94c7f21310f6/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 01:40:39,830 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 01:40:39,831 INFO L158 Benchmark]: Toolchain (without parser) took 5718.11ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 92.9MB in the beginning and 80.4MB in the end (delta: 12.5MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. [2022-11-03 01:40:39,831 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 90.2MB. Free memory is still 46.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:40:39,831 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.80ms. Allocated memory is still 123.7MB. Free memory was 92.7MB in the beginning and 101.7MB in the end (delta: -9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 01:40:39,832 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.91ms. Allocated memory is still 123.7MB. Free memory was 101.7MB in the beginning and 100.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:40:39,832 INFO L158 Benchmark]: Boogie Preprocessor took 36.96ms. Allocated memory is still 123.7MB. Free memory was 100.4MB in the beginning and 99.6MB in the end (delta: 803.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:40:39,832 INFO L158 Benchmark]: RCFGBuilder took 384.39ms. Allocated memory is still 123.7MB. Free memory was 99.6MB in the beginning and 90.3MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 01:40:39,833 INFO L158 Benchmark]: TraceAbstraction took 4900.32ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 89.5MB in the beginning and 82.5MB in the end (delta: 7.0MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. [2022-11-03 01:40:39,833 INFO L158 Benchmark]: Witness Printer took 54.52ms. Allocated memory is still 148.9MB. Free memory was 82.5MB in the beginning and 80.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:40:39,835 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 90.2MB. Free memory is still 46.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.80ms. Allocated memory is still 123.7MB. Free memory was 92.7MB in the beginning and 101.7MB in the end (delta: -9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.91ms. Allocated memory is still 123.7MB. Free memory was 101.7MB in the beginning and 100.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.96ms. Allocated memory is still 123.7MB. Free memory was 100.4MB in the beginning and 99.6MB in the end (delta: 803.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 384.39ms. Allocated memory is still 123.7MB. Free memory was 99.6MB in the beginning and 90.3MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4900.32ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 89.5MB in the beginning and 82.5MB in the end (delta: 7.0MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. * Witness Printer took 54.52ms. Allocated memory is still 148.9MB. Free memory was 82.5MB in the beginning and 80.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 11]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 11]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 4.8s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 372 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 362 mSDsluCounter, 266 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 182 mSDsCounter, 265 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 608 IncrementalHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 265 mSolverCounterUnsat, 110 mSDtfsCounter, 608 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=7, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 66 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 58 PreInvPairs, 58 NumberOfFragments, 96 HoareAnnotationTreeSize, 58 FomulaSimplifications, 399 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 373 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 340 SizeOfPredicates, 4 NumberOfNonLiveVariables, 37 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 56/68 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-03 01:40:39,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e54f21-ffff-4532-94b5-94c7f21310f6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE