./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark18_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark18_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe3c8b13f268d0f08d959b203c6650243d0aa01256dfd7d03d9b6e6990dd887b --- 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-b5237d8 [2022-11-22 00:35:44,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:35:44,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:35:44,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:35:44,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:35:44,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:35:44,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:35:44,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:35:44,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:35:44,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:35:44,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:35:44,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:35:44,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:35:44,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:35:44,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:35:44,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:35:44,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:35:44,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:35:44,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:35:44,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:35:44,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:35:44,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:35:44,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:35:44,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:35:44,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:35:44,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:35:44,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:35:44,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:35:44,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:35:44,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:35:44,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:35:44,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:35:44,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:35:44,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:35:44,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:35:44,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:35:44,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:35:44,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:35:44,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:35:44,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:35:44,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:35:44,526 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 00:35:44,560 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:35:44,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:35:44,561 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:35:44,561 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:35:44,562 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:35:44,562 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:35:44,562 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:35:44,568 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:35:44,568 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:35:44,568 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:35:44,569 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:35:44,570 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:35:44,570 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:35:44,570 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:35:44,570 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:35:44,570 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:35:44,571 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:35:44,571 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:35:44,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:35:44,572 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 00:35:44,572 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 00:35:44,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:35:44,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 00:35:44,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:35:44,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:35:44,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:35:44,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:35:44,574 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 00:35:44,575 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 00:35:44,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:35:44,575 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:35:44,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:35:44,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:35:44,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:35:44,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:35:44,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:35:44,577 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:35:44,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:35:44,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:35:44,578 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:35:44,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:35:44,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:35:44,579 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:35:44,579 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_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe3c8b13f268d0f08d959b203c6650243d0aa01256dfd7d03d9b6e6990dd887b [2022-11-22 00:35:44,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:35:44,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:35:44,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:35:44,944 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:35:44,944 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:35:44,946 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/loop-zilu/benchmark18_conjunctive.i [2022-11-22 00:35:48,108 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:35:48,370 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:35:48,371 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/sv-benchmarks/c/loop-zilu/benchmark18_conjunctive.i [2022-11-22 00:35:48,380 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/data/2954561f0/d85c5f61390246cda31f9a1028466c9f/FLAG79e28c065 [2022-11-22 00:35:48,401 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/data/2954561f0/d85c5f61390246cda31f9a1028466c9f [2022-11-22 00:35:48,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:35:48,409 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:35:48,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:35:48,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:35:48,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:35:48,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:35:48" (1/1) ... [2022-11-22 00:35:48,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a4304ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:35:48, skipping insertion in model container [2022-11-22 00:35:48,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:35:48" (1/1) ... [2022-11-22 00:35:48,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:35:48,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:35:48,605 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/sv-benchmarks/c/loop-zilu/benchmark18_conjunctive.i[873,886] [2022-11-22 00:35:48,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:35:48,623 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:35:48,633 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/sv-benchmarks/c/loop-zilu/benchmark18_conjunctive.i[873,886] [2022-11-22 00:35:48,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:35:48,648 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:35:48,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:35:48 WrapperNode [2022-11-22 00:35:48,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:35:48,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:35:48,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:35:48,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:35:48,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:35:48" (1/1) ... [2022-11-22 00:35:48,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:35:48" (1/1) ... [2022-11-22 00:35:48,681 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2022-11-22 00:35:48,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:35:48,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:35:48,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:35:48,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:35:48,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:35:48" (1/1) ... [2022-11-22 00:35:48,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:35:48" (1/1) ... [2022-11-22 00:35:48,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:35:48" (1/1) ... [2022-11-22 00:35:48,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:35:48" (1/1) ... [2022-11-22 00:35:48,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:35:48" (1/1) ... [2022-11-22 00:35:48,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:35:48" (1/1) ... [2022-11-22 00:35:48,699 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:35:48" (1/1) ... [2022-11-22 00:35:48,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:35:48" (1/1) ... [2022-11-22 00:35:48,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:35:48,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:35:48,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:35:48,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:35:48,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:35:48" (1/1) ... [2022-11-22 00:35:48,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:35:48,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:35:48,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:35:48,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:35:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:35:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:35:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:35:48,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:35:48,857 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:35:48,859 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:35:48,994 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:35:49,038 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:35:49,038 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 00:35:49,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:35:49 BoogieIcfgContainer [2022-11-22 00:35:49,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:35:49,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:35:49,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:35:49,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:35:49,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:35:48" (1/3) ... [2022-11-22 00:35:49,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa6863a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:35:49, skipping insertion in model container [2022-11-22 00:35:49,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:35:48" (2/3) ... [2022-11-22 00:35:49,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa6863a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:35:49, skipping insertion in model container [2022-11-22 00:35:49,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:35:49" (3/3) ... [2022-11-22 00:35:49,074 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark18_conjunctive.i [2022-11-22 00:35:49,125 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:35:49,125 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-22 00:35:49,229 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:35:49,236 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;@2a22ac7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:35:49,236 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-22 00:35:49,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:49,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 00:35:49,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:49,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 00:35:49,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 00:35:49,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:49,269 INFO L85 PathProgramCache]: Analyzing trace with hash 2092610, now seen corresponding path program 1 times [2022-11-22 00:35:49,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:49,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456724767] [2022-11-22 00:35:49,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:49,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:49,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:35:49,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:49,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456724767] [2022-11-22 00:35:49,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456724767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:35:49,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:35:49,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:35:49,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011479959] [2022-11-22 00:35:49,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:35:49,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:35:49,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:49,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:35:49,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:35:49,601 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:49,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:49,703 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-11-22 00:35:49,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:35:49,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-22 00:35:49,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:49,720 INFO L225 Difference]: With dead ends: 20 [2022-11-22 00:35:49,720 INFO L226 Difference]: Without dead ends: 15 [2022-11-22 00:35:49,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:35:49,732 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:49,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 20 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:35:49,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-22 00:35:49,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2022-11-22 00:35:49,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 12 states have internal predecessors, (13), 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) [2022-11-22 00:35:49,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-11-22 00:35:49,769 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2022-11-22 00:35:49,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:49,770 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-11-22 00:35:49,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:49,771 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-11-22 00:35:49,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 00:35:49,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:49,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 00:35:49,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:35:49,772 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 00:35:49,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:49,776 INFO L85 PathProgramCache]: Analyzing trace with hash 64870960, now seen corresponding path program 1 times [2022-11-22 00:35:49,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:49,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602090222] [2022-11-22 00:35:49,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:49,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:35:49,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:49,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602090222] [2022-11-22 00:35:49,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602090222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:35:49,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:35:49,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:35:49,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959070760] [2022-11-22 00:35:49,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:35:49,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:35:49,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:49,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:35:49,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:35:49,889 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:49,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:49,910 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-11-22 00:35:49,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:35:49,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 00:35:49,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:49,912 INFO L225 Difference]: With dead ends: 13 [2022-11-22 00:35:49,912 INFO L226 Difference]: Without dead ends: 12 [2022-11-22 00:35:49,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:35:49,914 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:49,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 10 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:35:49,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-22 00:35:49,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-22 00:35:49,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-11-22 00:35:49,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-22 00:35:49,919 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2022-11-22 00:35:49,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:49,919 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-22 00:35:49,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:49,920 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-22 00:35:49,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 00:35:49,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:49,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 00:35:49,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:35:49,921 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 00:35:49,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:49,922 INFO L85 PathProgramCache]: Analyzing trace with hash 2010999812, now seen corresponding path program 1 times [2022-11-22 00:35:49,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:49,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799842933] [2022-11-22 00:35:49,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:49,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:49,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:35:49,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:49,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799842933] [2022-11-22 00:35:49,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799842933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:35:49,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:35:49,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:35:49,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163830171] [2022-11-22 00:35:49,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:35:49,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:35:49,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:49,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:35:49,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:35:49,975 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:50,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:50,001 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-11-22 00:35:50,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:35:50,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-22 00:35:50,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:50,003 INFO L225 Difference]: With dead ends: 17 [2022-11-22 00:35:50,003 INFO L226 Difference]: Without dead ends: 16 [2022-11-22 00:35:50,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:35:50,005 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:50,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 15 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:35:50,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-22 00:35:50,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2022-11-22 00:35:50,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:50,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-11-22 00:35:50,010 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 6 [2022-11-22 00:35:50,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:50,026 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-11-22 00:35:50,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:50,026 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-11-22 00:35:50,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 00:35:50,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:50,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:35:50,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:35:50,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 00:35:50,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:50,028 INFO L85 PathProgramCache]: Analyzing trace with hash -2083515214, now seen corresponding path program 1 times [2022-11-22 00:35:50,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:50,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604445927] [2022-11-22 00:35:50,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:50,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:35:50,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:50,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604445927] [2022-11-22 00:35:50,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604445927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:35:50,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:35:50,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:35:50,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913762892] [2022-11-22 00:35:50,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:35:50,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:35:50,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:50,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:35:50,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:35:50,081 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:50,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:50,100 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-11-22 00:35:50,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:35:50,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 00:35:50,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:50,102 INFO L225 Difference]: With dead ends: 14 [2022-11-22 00:35:50,102 INFO L226 Difference]: Without dead ends: 13 [2022-11-22 00:35:50,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:35:50,103 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:50,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 8 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:35:50,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-22 00:35:50,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-22 00:35:50,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 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) [2022-11-22 00:35:50,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-11-22 00:35:50,108 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2022-11-22 00:35:50,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:50,108 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-11-22 00:35:50,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:50,109 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-11-22 00:35:50,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 00:35:50,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:50,110 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:35:50,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:35:50,110 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 00:35:50,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:50,111 INFO L85 PathProgramCache]: Analyzing trace with hash -803359244, now seen corresponding path program 1 times [2022-11-22 00:35:50,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:50,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866824664] [2022-11-22 00:35:50,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:50,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:50,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:35:50,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:50,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866824664] [2022-11-22 00:35:50,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866824664] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:35:50,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611090377] [2022-11-22 00:35:50,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:50,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:35:50,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:35:50,267 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:35:50,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:35:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:50,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 00:35:50,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:35:50,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:35:50,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:35:50,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:35:50,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611090377] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:35:50,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [31670958] [2022-11-22 00:35:50,465 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 00:35:50,466 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:35:50,470 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:35:50,476 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:35:50,477 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:35:50,986 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:35:51,464 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '232#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_#t~post4#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= |#NULL.offset| 0) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:35:51,465 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:35:51,465 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:35:51,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-22 00:35:51,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787058954] [2022-11-22 00:35:51,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:35:51,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 00:35:51,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:51,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 00:35:51,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-22 00:35:51,467 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:51,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:51,571 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-11-22 00:35:51,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 00:35:51,572 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-22 00:35:51,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:51,573 INFO L225 Difference]: With dead ends: 30 [2022-11-22 00:35:51,573 INFO L226 Difference]: Without dead ends: 29 [2022-11-22 00:35:51,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-22 00:35:51,574 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 27 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:51,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 35 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:35:51,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-22 00:35:51,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2022-11-22 00:35:51,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:51,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-11-22 00:35:51,588 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 9 [2022-11-22 00:35:51,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:51,589 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-11-22 00:35:51,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:51,589 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-11-22 00:35:51,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 00:35:51,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:51,590 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-11-22 00:35:51,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 00:35:51,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:35:51,797 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 00:35:51,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:51,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1065881398, now seen corresponding path program 1 times [2022-11-22 00:35:51,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:51,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098058484] [2022-11-22 00:35:51,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:51,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:51,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:35:51,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:51,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098058484] [2022-11-22 00:35:51,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098058484] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:35:51,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770699959] [2022-11-22 00:35:51,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:51,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:35:51,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:35:51,867 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:35:51,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 00:35:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:51,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 00:35:51,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:35:51,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:35:51,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:35:51,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:35:51,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770699959] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:35:51,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [293381758] [2022-11-22 00:35:51,985 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 00:35:51,985 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:35:51,986 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:35:51,986 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:35:51,986 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:35:52,138 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:35:52,646 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '383#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (not (<= |ULTIMATE.start_main_#t~post5#1| 2147483646)) (<= 1 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~k~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:35:52,646 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:35:52,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:35:52,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-22 00:35:52,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504041892] [2022-11-22 00:35:52,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:35:52,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 00:35:52,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:52,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 00:35:52,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-11-22 00:35:52,649 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 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) [2022-11-22 00:35:52,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:52,738 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-11-22 00:35:52,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 00:35:52,739 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-22 00:35:52,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:52,740 INFO L225 Difference]: With dead ends: 30 [2022-11-22 00:35:52,740 INFO L226 Difference]: Without dead ends: 29 [2022-11-22 00:35:52,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-22 00:35:52,741 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:52,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 32 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:35:52,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-22 00:35:52,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-11-22 00:35:52,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 27 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:52,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2022-11-22 00:35:52,745 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 11 [2022-11-22 00:35:52,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:52,746 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2022-11-22 00:35:52,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 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) [2022-11-22 00:35:52,746 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2022-11-22 00:35:52,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-22 00:35:52,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:52,747 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1] [2022-11-22 00:35:52,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 00:35:52,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:35:52,955 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 00:35:52,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:52,955 INFO L85 PathProgramCache]: Analyzing trace with hash 291495106, now seen corresponding path program 2 times [2022-11-22 00:35:52,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:52,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651217029] [2022-11-22 00:35:52,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:52,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:35:53,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:53,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651217029] [2022-11-22 00:35:53,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651217029] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:35:53,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899466240] [2022-11-22 00:35:53,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 00:35:53,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:35:53,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:35:53,129 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:35:53,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 00:35:53,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-22 00:35:53,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:35:53,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 00:35:53,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:35:53,238 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-22 00:35:53,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:35:53,286 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-22 00:35:53,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899466240] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:35:53,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [18282131] [2022-11-22 00:35:53,289 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 00:35:53,289 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:35:53,290 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:35:53,290 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:35:53,290 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:35:53,492 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:35:53,937 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '618#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_#t~post4#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= |#NULL.offset| 0) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:35:53,938 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:35:53,938 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:35:53,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 2, 2] total 13 [2022-11-22 00:35:53,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106026483] [2022-11-22 00:35:53,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:35:53,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 00:35:53,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:53,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 00:35:53,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-11-22 00:35:53,940 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:54,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:54,170 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2022-11-22 00:35:54,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 00:35:54,171 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-22 00:35:54,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:54,172 INFO L225 Difference]: With dead ends: 32 [2022-11-22 00:35:54,172 INFO L226 Difference]: Without dead ends: 31 [2022-11-22 00:35:54,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=202, Invalid=790, Unknown=0, NotChecked=0, Total=992 [2022-11-22 00:35:54,173 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 25 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:54,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 21 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:35:54,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-22 00:35:54,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2022-11-22 00:35:54,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 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) [2022-11-22 00:35:54,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-11-22 00:35:54,181 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2022-11-22 00:35:54,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:54,182 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-11-22 00:35:54,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:54,185 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-11-22 00:35:54,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-22 00:35:54,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:54,186 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1] [2022-11-22 00:35:54,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 00:35:54,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:35:54,391 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 00:35:54,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:54,392 INFO L85 PathProgramCache]: Analyzing trace with hash 953924228, now seen corresponding path program 2 times [2022-11-22 00:35:54,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:54,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773262229] [2022-11-22 00:35:54,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:54,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:54,637 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:35:54,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:54,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773262229] [2022-11-22 00:35:54,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773262229] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:35:54,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651899282] [2022-11-22 00:35:54,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 00:35:54,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:35:54,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:35:54,639 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:35:54,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 00:35:54,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-22 00:35:54,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:35:54,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-22 00:35:54,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:35:54,743 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:35:54,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:35:54,945 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:35:54,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651899282] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:35:54,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1719043491] [2022-11-22 00:35:54,947 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 00:35:54,948 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:35:54,948 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:35:54,948 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:35:54,948 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:35:55,138 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:35:55,625 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '889#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (not (<= |ULTIMATE.start_main_#t~post5#1| 2147483646)) (<= 1 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~k~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:35:55,625 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:35:55,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:35:55,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2022-11-22 00:35:55,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513431513] [2022-11-22 00:35:55,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:35:55,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-22 00:35:55,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:55,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-22 00:35:55,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2022-11-22 00:35:55,627 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 22 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 22 states have internal predecessors, (51), 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) [2022-11-22 00:35:55,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:55,847 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2022-11-22 00:35:55,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-22 00:35:55,847 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-22 00:35:55,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:55,848 INFO L225 Difference]: With dead ends: 59 [2022-11-22 00:35:55,848 INFO L226 Difference]: Without dead ends: 58 [2022-11-22 00:35:55,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=327, Invalid=1155, Unknown=0, NotChecked=0, Total=1482 [2022-11-22 00:35:55,850 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 53 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:55,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:35:55,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-22 00:35:55,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2022-11-22 00:35:55,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.0178571428571428) internal successors, (57), 56 states have internal predecessors, (57), 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) [2022-11-22 00:35:55,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2022-11-22 00:35:55,857 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 26 [2022-11-22 00:35:55,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:55,858 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2022-11-22 00:35:55,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 22 states have internal predecessors, (51), 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) [2022-11-22 00:35:55,858 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2022-11-22 00:35:55,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-22 00:35:55,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:55,859 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1] [2022-11-22 00:35:55,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 00:35:56,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:35:56,060 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 00:35:56,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:56,060 INFO L85 PathProgramCache]: Analyzing trace with hash 999405636, now seen corresponding path program 3 times [2022-11-22 00:35:56,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:56,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913758323] [2022-11-22 00:35:56,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:56,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:56,577 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:35:56,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:56,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913758323] [2022-11-22 00:35:56,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913758323] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:35:56,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978116904] [2022-11-22 00:35:56,577 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 00:35:56,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:35:56,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:35:56,580 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:35:56,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 00:35:56,651 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 00:35:56,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:35:56,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-22 00:35:56,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:35:56,741 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:35:56,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:35:57,346 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:35:57,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978116904] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:35:57,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1005165217] [2022-11-22 00:35:57,349 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 00:35:57,349 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:35:57,349 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:35:57,349 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:35:57,350 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:35:57,508 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:35:57,976 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1430#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (not (<= |ULTIMATE.start_main_#t~post5#1| 2147483646)) (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~k~0#1|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:35:57,976 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:35:57,976 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:35:57,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2022-11-22 00:35:57,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656166114] [2022-11-22 00:35:57,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:35:57,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-22 00:35:57,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:57,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-22 00:35:57,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=572, Invalid=2184, Unknown=0, NotChecked=0, Total=2756 [2022-11-22 00:35:57,979 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand has 46 states, 45 states have (on average 2.466666666666667) internal successors, (111), 46 states have internal predecessors, (111), 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) [2022-11-22 00:35:58,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:58,634 INFO L93 Difference]: Finished difference Result 119 states and 130 transitions. [2022-11-22 00:35:58,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-22 00:35:58,635 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.466666666666667) internal successors, (111), 46 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-22 00:35:58,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:58,637 INFO L225 Difference]: With dead ends: 119 [2022-11-22 00:35:58,637 INFO L226 Difference]: Without dead ends: 118 [2022-11-22 00:35:58,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1343 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1354, Invalid=4196, Unknown=0, NotChecked=0, Total=5550 [2022-11-22 00:35:58,640 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 169 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:58,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 69 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:35:58,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-22 00:35:58,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2022-11-22 00:35:58,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.0086206896551724) internal successors, (117), 116 states have internal predecessors, (117), 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) [2022-11-22 00:35:58,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2022-11-22 00:35:58,651 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 56 [2022-11-22 00:35:58,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:58,652 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2022-11-22 00:35:58,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.466666666666667) internal successors, (111), 46 states have internal predecessors, (111), 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) [2022-11-22 00:35:58,652 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2022-11-22 00:35:58,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-22 00:35:58,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:58,660 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1] [2022-11-22 00:35:58,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-22 00:35:58,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-22 00:35:58,866 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 00:35:58,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:58,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1525546044, now seen corresponding path program 4 times [2022-11-22 00:35:58,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:58,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756386084] [2022-11-22 00:35:58,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:58,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:00,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:00,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:36:00,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756386084] [2022-11-22 00:36:00,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756386084] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:36:00,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476286861] [2022-11-22 00:36:00,507 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 00:36:00,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:36:00,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:36:00,509 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:36:00,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 00:36:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:00,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-22 00:36:00,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:36:00,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:00,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:36:03,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:03,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476286861] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:36:03,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1958147776] [2022-11-22 00:36:03,079 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 00:36:03,080 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:36:03,080 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:36:03,080 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:36:03,081 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:36:03,248 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:36:03,934 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2547#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (not (<= |ULTIMATE.start_main_#t~post5#1| 2147483646)) (<= 1 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~k~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:36:03,934 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:36:03,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:36:03,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 93 [2022-11-22 00:36:03,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934503456] [2022-11-22 00:36:03,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:36:03,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-11-22 00:36:03,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:36:03,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-11-22 00:36:03,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2275, Invalid=7825, Unknown=0, NotChecked=0, Total=10100 [2022-11-22 00:36:03,941 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand has 94 states, 93 states have (on average 2.4838709677419355) internal successors, (231), 94 states have internal predecessors, (231), 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) [2022-11-22 00:36:05,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:36:05,926 INFO L93 Difference]: Finished difference Result 239 states and 262 transitions. [2022-11-22 00:36:05,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-11-22 00:36:05,926 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 2.4838709677419355) internal successors, (231), 94 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2022-11-22 00:36:05,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:36:05,928 INFO L225 Difference]: With dead ends: 239 [2022-11-22 00:36:05,928 INFO L226 Difference]: Without dead ends: 238 [2022-11-22 00:36:05,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5040 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=5565, Invalid=15897, Unknown=0, NotChecked=0, Total=21462 [2022-11-22 00:36:05,934 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 262 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:36:05,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 118 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:36:05,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-22 00:36:05,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 237. [2022-11-22 00:36:05,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.0042372881355932) internal successors, (237), 236 states have internal predecessors, (237), 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) [2022-11-22 00:36:05,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2022-11-22 00:36:05,974 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 116 [2022-11-22 00:36:05,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:36:05,974 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2022-11-22 00:36:05,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 2.4838709677419355) internal successors, (231), 94 states have internal predecessors, (231), 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) [2022-11-22 00:36:05,975 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2022-11-22 00:36:05,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-22 00:36:05,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:36:05,979 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1] [2022-11-22 00:36:05,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 00:36:06,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 00:36:06,185 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 00:36:06,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:36:06,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1921787196, now seen corresponding path program 5 times [2022-11-22 00:36:06,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:36:06,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497035304] [2022-11-22 00:36:06,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:06,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:36:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:11,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:36:11,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497035304] [2022-11-22 00:36:11,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497035304] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:36:11,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109094654] [2022-11-22 00:36:11,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 00:36:11,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:36:11,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:36:11,983 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:36:12,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 00:36:12,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-22 00:36:12,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:36:12,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-22 00:36:12,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:36:12,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:12,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:36:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:20,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109094654] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:36:20,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1891470576] [2022-11-22 00:36:20,157 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 00:36:20,157 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:36:20,157 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:36:20,158 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:36:20,158 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:36:20,339 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:36:21,125 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4816#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (not (<= |ULTIMATE.start_main_#t~post5#1| 2147483646)) (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~k~0#1|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:36:21,125 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:36:21,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:36:21,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 189 [2022-11-22 00:36:21,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853995951] [2022-11-22 00:36:21,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:36:21,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2022-11-22 00:36:21,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:36:21,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2022-11-22 00:36:21,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9140, Invalid=29472, Unknown=0, NotChecked=0, Total=38612 [2022-11-22 00:36:21,135 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand has 190 states, 189 states have (on average 2.492063492063492) internal successors, (471), 190 states have internal predecessors, (471), 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) [2022-11-22 00:36:28,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:36:28,531 INFO L93 Difference]: Finished difference Result 479 states and 526 transitions. [2022-11-22 00:36:28,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2022-11-22 00:36:28,532 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 2.492063492063492) internal successors, (471), 190 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 236 [2022-11-22 00:36:28,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:36:28,535 INFO L225 Difference]: With dead ends: 479 [2022-11-22 00:36:28,535 INFO L226 Difference]: Without dead ends: 478 [2022-11-22 00:36:28,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 895 GetRequests, 606 SyntacticMatches, 0 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19343 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=22630, Invalid=61760, Unknown=0, NotChecked=0, Total=84390 [2022-11-22 00:36:28,543 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 788 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:36:28,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 212 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 00:36:28,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-11-22 00:36:28,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 477. [2022-11-22 00:36:28,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 1.0021008403361344) internal successors, (477), 476 states have internal predecessors, (477), 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) [2022-11-22 00:36:28,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 477 transitions. [2022-11-22 00:36:28,572 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 477 transitions. Word has length 236 [2022-11-22 00:36:28,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:36:28,573 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 477 transitions. [2022-11-22 00:36:28,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 2.492063492063492) internal successors, (471), 190 states have internal predecessors, (471), 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) [2022-11-22 00:36:28,574 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 477 transitions. [2022-11-22 00:36:28,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2022-11-22 00:36:28,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:36:28,584 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 94, 94, 1, 1, 1] [2022-11-22 00:36:28,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 00:36:28,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-22 00:36:28,791 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 00:36:28,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:36:28,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1413253316, now seen corresponding path program 6 times [2022-11-22 00:36:28,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:36:28,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750378144] [2022-11-22 00:36:28,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:28,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:36:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:48,394 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:48,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:36:48,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750378144] [2022-11-22 00:36:48,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750378144] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:36:48,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763761278] [2022-11-22 00:36:48,395 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 00:36:48,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:36:48,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:36:48,396 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:36:48,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 00:36:48,654 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 00:36:48,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:36:48,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 191 conjunts are in the unsatisfiable core [2022-11-22 00:36:48,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:36:49,414 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:49,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:37:18,842 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:37:18,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763761278] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:37:18,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1183361027] [2022-11-22 00:37:18,844 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 00:37:18,844 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:37:18,845 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:37:18,845 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:37:18,845 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:37:18,978 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:37:20,260 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9389#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (not (<= |ULTIMATE.start_main_#t~post5#1| 2147483646)) (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~k~0#1|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:37:20,260 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:37:20,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:37:20,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 381 [2022-11-22 00:37:20,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027787994] [2022-11-22 00:37:20,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:37:20,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2022-11-22 00:37:20,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:37:20,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2022-11-22 00:37:20,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36692, Invalid=114240, Unknown=0, NotChecked=0, Total=150932 [2022-11-22 00:37:20,285 INFO L87 Difference]: Start difference. First operand 477 states and 477 transitions. Second operand has 382 states, 381 states have (on average 2.4960629921259843) internal successors, (951), 382 states have internal predecessors, (951), 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) [2022-11-22 00:37:54,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:37:54,226 INFO L93 Difference]: Finished difference Result 959 states and 1054 transitions. [2022-11-22 00:37:54,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 383 states. [2022-11-22 00:37:54,227 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 2.4960629921259843) internal successors, (951), 382 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 476 [2022-11-22 00:37:54,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:37:54,230 INFO L225 Difference]: With dead ends: 959 [2022-11-22 00:37:54,230 INFO L226 Difference]: Without dead ends: 958 [2022-11-22 00:37:54,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1807 GetRequests, 1230 SyntacticMatches, 0 SemanticMatches, 577 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75599 ImplicationChecksByTransitivity, 62.1s TimeCoverageRelationStatistics Valid=91318, Invalid=243344, Unknown=0, NotChecked=0, Total=334662 [2022-11-22 00:37:54,248 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1958 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1958 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:37:54,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1958 Valid, 409 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 00:37:54,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2022-11-22 00:37:54,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 957. [2022-11-22 00:37:54,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 1.0010460251046025) internal successors, (957), 956 states have internal predecessors, (957), 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) [2022-11-22 00:37:54,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 957 transitions. [2022-11-22 00:37:54,286 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 957 transitions. Word has length 476 [2022-11-22 00:37:54,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:37:54,287 INFO L495 AbstractCegarLoop]: Abstraction has 957 states and 957 transitions. [2022-11-22 00:37:54,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 2.4960629921259843) internal successors, (951), 382 states have internal predecessors, (951), 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) [2022-11-22 00:37:54,288 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 957 transitions. [2022-11-22 00:37:54,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2022-11-22 00:37:54,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:37:54,326 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 190, 190, 1, 1, 1] [2022-11-22 00:37:54,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-22 00:37:54,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:37:54,534 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 00:37:54,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:37:54,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1038214340, now seen corresponding path program 7 times [2022-11-22 00:37:54,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:37:54,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370132622] [2022-11-22 00:37:54,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:37:54,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:37:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:39:22,828 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:39:22,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:39:22,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370132622] [2022-11-22 00:39:22,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370132622] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:39:22,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335612465] [2022-11-22 00:39:22,829 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 00:39:22,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:39:22,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:39:22,835 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:39:22,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 00:39:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:39:23,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 2512 conjuncts, 383 conjunts are in the unsatisfiable core [2022-11-22 00:39:23,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:39:24,914 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:39:24,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:41:28,663 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:41:28,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335612465] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:41:28,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1894155240] [2022-11-22 00:41:28,667 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 00:41:28,667 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:41:28,667 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:41:28,667 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:41:28,668 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:41:28,806 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:41:32,118 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18570#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (not (<= |ULTIMATE.start_main_#t~post5#1| 2147483646)) (<= 1 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~k~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:41:32,118 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:41:32,118 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:41:32,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [383, 383, 383] total 765 [2022-11-22 00:41:32,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625934634] [2022-11-22 00:41:32,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:41:32,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 766 states [2022-11-22 00:41:32,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:41:32,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 766 interpolants. [2022-11-22 00:41:32,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147091, Invalid=449665, Unknown=0, NotChecked=0, Total=596756 [2022-11-22 00:41:32,201 INFO L87 Difference]: Start difference. First operand 957 states and 957 transitions. Second operand has 766 states, 765 states have (on average 2.4980392156862745) internal successors, (1911), 766 states have internal predecessors, (1911), 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) [2022-11-22 00:46:42,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:46:42,929 INFO L93 Difference]: Finished difference Result 1919 states and 2110 transitions. [2022-11-22 00:46:42,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 767 states. [2022-11-22 00:46:42,932 INFO L78 Accepts]: Start accepts. Automaton has has 766 states, 765 states have (on average 2.4980392156862745) internal successors, (1911), 766 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 956 [2022-11-22 00:46:42,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:46:42,940 INFO L225 Difference]: With dead ends: 1919 [2022-11-22 00:46:42,941 INFO L226 Difference]: Without dead ends: 1918 [2022-11-22 00:46:43,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3631 GetRequests, 2478 SyntacticMatches, 0 SemanticMatches, 1153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298704 ImplicationChecksByTransitivity, 273.8s TimeCoverageRelationStatistics Valid=366933, Invalid=965937, Unknown=0, NotChecked=0, Total=1332870 [2022-11-22 00:46:43,039 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 4004 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 1960 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4004 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 2158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:46:43,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4004 Valid, 817 Invalid, 2158 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [198 Valid, 1960 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-22 00:46:43,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2022-11-22 00:46:43,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1917. [2022-11-22 00:46:43,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1916 states have (on average 1.0005219206680585) internal successors, (1917), 1916 states have internal predecessors, (1917), 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) [2022-11-22 00:46:43,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 1917 transitions. [2022-11-22 00:46:43,122 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 1917 transitions. Word has length 956 [2022-11-22 00:46:43,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:46:43,124 INFO L495 AbstractCegarLoop]: Abstraction has 1917 states and 1917 transitions. [2022-11-22 00:46:43,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 766 states, 765 states have (on average 2.4980392156862745) internal successors, (1911), 766 states have internal predecessors, (1911), 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) [2022-11-22 00:46:43,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 1917 transitions. [2022-11-22 00:46:43,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1917 [2022-11-22 00:46:43,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:46:43,161 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 383, 382, 382, 1, 1, 1] [2022-11-22 00:46:43,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-22 00:46:43,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_794b9147-ea98-4c7a-94c5-cc95d913f972/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:46:43,362 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 00:46:43,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:46:43,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1585668924, now seen corresponding path program 8 times [2022-11-22 00:46:43,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:46:43,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555428048] [2022-11-22 00:46:43,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:46:43,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:46:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat