./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-examples/standard_compareModified_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_compareModified_ground.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ec4d4b5cea975144b4de3d9f9eb9b04d1c4b7aa6b7464f360f53530c4a9bd50e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:10:15,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:10:15,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:10:15,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:10:15,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:10:15,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:10:15,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:10:15,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:10:15,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:10:15,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:10:15,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:10:15,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:10:15,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:10:15,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:10:15,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:10:15,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:10:15,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:10:15,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:10:15,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:10:15,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:10:15,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:10:15,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:10:15,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:10:15,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:10:15,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:10:15,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:10:15,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:10:15,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:10:15,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:10:15,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:10:15,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:10:15,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:10:15,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:10:15,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:10:15,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:10:15,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:10:15,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:10:15,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:10:15,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:10:15,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:10:15,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:10:15,566 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 10:10:15,588 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:10:15,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:10:15,589 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:10:15,589 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:10:15,589 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:10:15,590 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:10:15,590 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:10:15,590 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:10:15,590 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:10:15,590 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:10:15,590 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:10:15,590 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:10:15,590 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:10:15,590 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:10:15,591 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:10:15,591 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:10:15,591 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:10:15,591 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:10:15,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:10:15,592 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:10:15,592 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:10:15,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:10:15,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:10:15,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:10:15,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:10:15,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:10:15,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:10:15,593 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 10:10:15,594 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:10:15,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:10:15,594 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:10:15,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:10:15,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:10:15,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:10:15,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:10:15,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:10:15,595 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:10:15,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:10:15,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:10:15,596 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:10:15,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:10:15,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:10:15,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:10:15,596 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_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec4d4b5cea975144b4de3d9f9eb9b04d1c4b7aa6b7464f360f53530c4a9bd50e [2022-12-14 10:10:15,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:10:15,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:10:15,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:10:15,774 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:10:15,775 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:10:15,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/array-examples/standard_compareModified_ground.i [2022-12-14 10:10:18,336 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:10:18,474 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:10:18,474 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/sv-benchmarks/c/array-examples/standard_compareModified_ground.i [2022-12-14 10:10:18,478 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/data/cde521e12/2785051d370446849de9a3c8f15492fd/FLAG68f2bd408 [2022-12-14 10:10:18,488 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/data/cde521e12/2785051d370446849de9a3c8f15492fd [2022-12-14 10:10:18,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:10:18,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:10:18,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:10:18,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:10:18,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:10:18,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:10:18" (1/1) ... [2022-12-14 10:10:18,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@464d455d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:10:18, skipping insertion in model container [2022-12-14 10:10:18,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:10:18" (1/1) ... [2022-12-14 10:10:18,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:10:18,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:10:18,611 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_57011572-b382-4371-a87f-0931e4b68a01/sv-benchmarks/c/array-examples/standard_compareModified_ground.i[824,837] [2022-12-14 10:10:18,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:10:18,628 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:10:18,637 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_57011572-b382-4371-a87f-0931e4b68a01/sv-benchmarks/c/array-examples/standard_compareModified_ground.i[824,837] [2022-12-14 10:10:18,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:10:18,652 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:10:18,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:10:18 WrapperNode [2022-12-14 10:10:18,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:10:18,654 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:10:18,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:10:18,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:10:18,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:10:18" (1/1) ... [2022-12-14 10:10:18,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:10:18" (1/1) ... [2022-12-14 10:10:18,679 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 94 [2022-12-14 10:10:18,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:10:18,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:10:18,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:10:18,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:10:18,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:10:18" (1/1) ... [2022-12-14 10:10:18,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:10:18" (1/1) ... [2022-12-14 10:10:18,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:10:18" (1/1) ... [2022-12-14 10:10:18,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:10:18" (1/1) ... [2022-12-14 10:10:18,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:10:18" (1/1) ... [2022-12-14 10:10:18,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:10:18" (1/1) ... [2022-12-14 10:10:18,696 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:10:18" (1/1) ... [2022-12-14 10:10:18,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:10:18" (1/1) ... [2022-12-14 10:10:18,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:10:18,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:10:18,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:10:18,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:10:18,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:10:18" (1/1) ... [2022-12-14 10:10:18,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:10:18,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:10:18,723 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:10:18,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:10:18,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:10:18,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:10:18,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:10:18,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 10:10:18,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:10:18,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:10:18,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 10:10:18,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 10:10:18,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 10:10:18,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:10:18,823 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:10:18,825 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:10:18,986 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:10:19,035 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:10:19,035 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 10:10:19,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:10:19 BoogieIcfgContainer [2022-12-14 10:10:19,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:10:19,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:10:19,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:10:19,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:10:19,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:10:18" (1/3) ... [2022-12-14 10:10:19,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707fa925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:10:19, skipping insertion in model container [2022-12-14 10:10:19,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:10:18" (2/3) ... [2022-12-14 10:10:19,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707fa925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:10:19, skipping insertion in model container [2022-12-14 10:10:19,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:10:19" (3/3) ... [2022-12-14 10:10:19,047 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_compareModified_ground.i [2022-12-14 10:10:19,066 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:10:19,066 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-14 10:10:19,113 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:10:19,120 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;@797d4ad9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:10:19,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-14 10:10:19,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 26 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:10:19,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 10:10:19,130 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:10:19,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 10:10:19,131 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 10:10:19,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:10:19,137 INFO L85 PathProgramCache]: Analyzing trace with hash 138862, now seen corresponding path program 1 times [2022-12-14 10:10:19,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:10:19,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459201833] [2022-12-14 10:10:19,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:19,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:10:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:19,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:10:19,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:10:19,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459201833] [2022-12-14 10:10:19,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459201833] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:10:19,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:10:19,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:10:19,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44021721] [2022-12-14 10:10:19,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:10:19,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:10:19,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:10:19,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:10:19,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:10:19,446 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 26 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:10:19,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:10:19,512 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2022-12-14 10:10:19,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:10:19,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 10:10:19,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:10:19,520 INFO L225 Difference]: With dead ends: 59 [2022-12-14 10:10:19,520 INFO L226 Difference]: Without dead ends: 32 [2022-12-14 10:10:19,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:10:19,525 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:10:19,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 68 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:10:19,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-14 10:10:19,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-12-14 10:10:19,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 28 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:10:19,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-12-14 10:10:19,554 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 3 [2022-12-14 10:10:19,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:10:19,555 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-12-14 10:10:19,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:10:19,555 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-12-14 10:10:19,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 10:10:19,555 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:10:19,556 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-12-14 10:10:19,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:10:19,556 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 10:10:19,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:10:19,557 INFO L85 PathProgramCache]: Analyzing trace with hash -158080926, now seen corresponding path program 1 times [2022-12-14 10:10:19,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:10:19,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812214675] [2022-12-14 10:10:19,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:19,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:10:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:19,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:10:19,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:10:19,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812214675] [2022-12-14 10:10:19,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812214675] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:10:19,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54286390] [2022-12-14 10:10:19,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:19,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:10:19,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:10:19,656 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:10:19,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:10:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:19,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:10:19,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:10:19,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:10:19,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:10:19,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54286390] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:10:19,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:10:19,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2022-12-14 10:10:19,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104588663] [2022-12-14 10:10:19,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:10:19,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:10:19,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:10:19,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:10:19,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:10:19,781 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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) [2022-12-14 10:10:19,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:10:19,827 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-12-14 10:10:19,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:10:19,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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 [2022-12-14 10:10:19,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:10:19,829 INFO L225 Difference]: With dead ends: 32 [2022-12-14 10:10:19,829 INFO L226 Difference]: Without dead ends: 31 [2022-12-14 10:10:19,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-14 10:10:19,831 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 28 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:10:19,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 65 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:10:19,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-14 10:10:19,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-12-14 10:10:19,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 27 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:10:19,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-12-14 10:10:19,838 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 6 [2022-12-14 10:10:19,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:10:19,838 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-12-14 10:10:19,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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) [2022-12-14 10:10:19,839 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-12-14 10:10:19,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 10:10:19,839 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:10:19,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:10:19,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:10:20,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:10:20,042 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 10:10:20,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:10:20,046 INFO L85 PathProgramCache]: Analyzing trace with hash -605533284, now seen corresponding path program 1 times [2022-12-14 10:10:20,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:10:20,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212044274] [2022-12-14 10:10:20,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:20,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:10:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:20,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:10:20,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:10:20,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212044274] [2022-12-14 10:10:20,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212044274] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:10:20,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579196669] [2022-12-14 10:10:20,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:20,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:10:20,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:10:20,242 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:10:20,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 10:10:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:20,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 10:10:20,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:10:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:10:20,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:10:20,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579196669] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:10:20,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:10:20,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-12-14 10:10:20,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113331658] [2022-12-14 10:10:20,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:10:20,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:10:20,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:10:20,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:10:20,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:10:20,313 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:10:20,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:10:20,335 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2022-12-14 10:10:20,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:10:20,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 10:10:20,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:10:20,337 INFO L225 Difference]: With dead ends: 31 [2022-12-14 10:10:20,337 INFO L226 Difference]: Without dead ends: 30 [2022-12-14 10:10:20,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:10:20,338 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 20 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 22 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 [2022-12-14 10:10:20,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 22 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:10:20,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-12-14 10:10:20,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-12-14 10:10:20,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 26 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:10:20,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2022-12-14 10:10:20,345 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 7 [2022-12-14 10:10:20,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:10:20,345 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2022-12-14 10:10:20,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:10:20,346 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2022-12-14 10:10:20,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 10:10:20,346 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:10:20,346 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2022-12-14 10:10:20,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 10:10:20,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:10:20,547 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 10:10:20,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:10:20,548 INFO L85 PathProgramCache]: Analyzing trace with hash -605541364, now seen corresponding path program 1 times [2022-12-14 10:10:20,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:10:20,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837541483] [2022-12-14 10:10:20,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:20,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:10:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:20,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:10:20,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:10:20,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837541483] [2022-12-14 10:10:20,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837541483] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:10:20,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:10:20,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:10:20,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482833609] [2022-12-14 10:10:20,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:10:20,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:10:20,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:10:20,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:10:20,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:10:20,592 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2022-12-14 10:10:20,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:10:20,614 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-12-14 10:10:20,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:10:20,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2022-12-14 10:10:20,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:10:20,615 INFO L225 Difference]: With dead ends: 30 [2022-12-14 10:10:20,616 INFO L226 Difference]: Without dead ends: 29 [2022-12-14 10:10:20,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:10:20,617 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:10:20,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:10:20,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-14 10:10:20,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2022-12-14 10:10:20,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 23 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:10:20,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-12-14 10:10:20,623 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 7 [2022-12-14 10:10:20,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:10:20,624 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-12-14 10:10:20,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2022-12-14 10:10:20,624 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-12-14 10:10:20,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:10:20,624 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:10:20,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:10:20,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 10:10:20,625 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 10:10:20,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:10:20,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1591662552, now seen corresponding path program 1 times [2022-12-14 10:10:20,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:10:20,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524650253] [2022-12-14 10:10:20,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:20,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:10:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:10:20,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:10:20,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524650253] [2022-12-14 10:10:20,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524650253] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:10:20,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088601162] [2022-12-14 10:10:20,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:20,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:10:20,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:10:20,672 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:10:20,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 10:10:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:20,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 10:10:20,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:10:20,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:10:20,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:10:20,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088601162] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:10:20,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:10:20,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-12-14 10:10:20,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659131309] [2022-12-14 10:10:20,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:10:20,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:10:20,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:10:20,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:10:20,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:10:20,735 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:10:20,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:10:20,758 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2022-12-14 10:10:20,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:10:20,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 10:10:20,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:10:20,759 INFO L225 Difference]: With dead ends: 49 [2022-12-14 10:10:20,759 INFO L226 Difference]: Without dead ends: 30 [2022-12-14 10:10:20,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:10:20,761 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:10:20,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:10:20,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-12-14 10:10:20,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-12-14 10:10:20,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 26 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:10:20,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2022-12-14 10:10:20,766 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 8 [2022-12-14 10:10:20,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:10:20,766 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2022-12-14 10:10:20,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:10:20,766 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2022-12-14 10:10:20,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 10:10:20,766 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:10:20,767 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:10:20,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 10:10:20,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:10:20,968 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 10:10:20,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:10:20,969 INFO L85 PathProgramCache]: Analyzing trace with hash -779993489, now seen corresponding path program 1 times [2022-12-14 10:10:20,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:10:20,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807656497] [2022-12-14 10:10:20,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:20,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:10:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:21,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 10:10:21,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:10:21,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807656497] [2022-12-14 10:10:21,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807656497] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:10:21,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681085479] [2022-12-14 10:10:21,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:21,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:10:21,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:10:21,136 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:10:21,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 10:10:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:21,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 10:10:21,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:10:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:10:21,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:10:21,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681085479] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:10:21,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:10:21,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2022-12-14 10:10:21,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233295869] [2022-12-14 10:10:21,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:10:21,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:10:21,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:10:21,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:10:21,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:10:21,194 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-12-14 10:10:21,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:10:21,215 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-12-14 10:10:21,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:10:21,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 [2022-12-14 10:10:21,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:10:21,216 INFO L225 Difference]: With dead ends: 30 [2022-12-14 10:10:21,216 INFO L226 Difference]: Without dead ends: 29 [2022-12-14 10:10:21,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:10:21,217 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:10:21,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 36 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:10:21,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-14 10:10:21,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2022-12-14 10:10:21,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.4) internal successors, (28), 23 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:10:21,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-12-14 10:10:21,223 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 11 [2022-12-14 10:10:21,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:10:21,223 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-12-14 10:10:21,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-12-14 10:10:21,223 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-12-14 10:10:21,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 10:10:21,224 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:10:21,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:10:21,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 10:10:21,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:10:21,425 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 10:10:21,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:10:21,426 INFO L85 PathProgramCache]: Analyzing trace with hash 523752110, now seen corresponding path program 1 times [2022-12-14 10:10:21,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:10:21,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838912224] [2022-12-14 10:10:21,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:21,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:10:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:21,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:10:21,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:10:21,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838912224] [2022-12-14 10:10:21,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838912224] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:10:21,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410061505] [2022-12-14 10:10:21,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:21,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:10:21,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:10:21,596 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:10:21,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 10:10:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:21,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:10:21,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:10:21,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:10:21,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:10:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:10:21,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410061505] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:10:21,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1796887143] [2022-12-14 10:10:21,712 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 10:10:21,712 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:10:21,716 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:10:21,722 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:10:21,722 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:10:21,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:21,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:21,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:21,855 INFO L321 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-12-14 10:10:21,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-12-14 10:10:21,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:21,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:21,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:21,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-12-14 10:10:21,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:21,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:21,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-12-14 10:10:22,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:22,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:22,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:22,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:22,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-12-14 10:10:22,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:22,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:22,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:22,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:22,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:22,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:22,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:22,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:22,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:22,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:22,327 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:22,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:22,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:22,331 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:22,332 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:22,356 INFO L321 Elim1Store]: treesize reduction 141, result has 7.2 percent of original size [2022-12-14 10:10:22,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 441 treesize of output 392 [2022-12-14 10:10:22,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:22,485 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-14 10:10:22,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-12-14 10:10:22,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:22,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:22,585 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-12-14 10:10:22,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-12-14 10:10:22,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:22,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:22,682 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-12-14 10:10:22,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-12-14 10:10:22,814 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:22,815 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:22,839 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-12-14 10:10:22,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-12-14 10:10:22,882 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 24 for LOIs [2022-12-14 10:10:22,887 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:10:23,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1796887143] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:10:23,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:10:23,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5, 4, 5] total 21 [2022-12-14 10:10:23,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824665984] [2022-12-14 10:10:23,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:10:23,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 10:10:23,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:10:23,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 10:10:23,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2022-12-14 10:10:23,653 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 13 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 10:10:24,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:10:24,171 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2022-12-14 10:10:24,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 10:10:24,171 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-12-14 10:10:24,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:10:24,172 INFO L225 Difference]: With dead ends: 46 [2022-12-14 10:10:24,172 INFO L226 Difference]: Without dead ends: 34 [2022-12-14 10:10:24,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2022-12-14 10:10:24,172 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 36 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:10:24,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 57 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:10:24,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-14 10:10:24,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-12-14 10:10:24,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.32) internal successors, (33), 28 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:10:24,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-12-14 10:10:24,178 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 16 [2022-12-14 10:10:24,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:10:24,178 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-12-14 10:10:24,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 10:10:24,179 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-12-14 10:10:24,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 10:10:24,179 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:10:24,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:10:24,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-14 10:10:24,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:10:24,380 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 10:10:24,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:10:24,381 INFO L85 PathProgramCache]: Analyzing trace with hash 961176248, now seen corresponding path program 1 times [2022-12-14 10:10:24,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:10:24,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192263350] [2022-12-14 10:10:24,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:24,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:10:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:24,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:10:24,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:10:24,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192263350] [2022-12-14 10:10:24,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192263350] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:10:24,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232469495] [2022-12-14 10:10:24,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:24,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:10:24,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:10:24,460 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:10:24,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 10:10:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:24,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:10:24,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:10:24,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:10:24,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:10:24,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:10:24,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232469495] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:10:24,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1871657677] [2022-12-14 10:10:24,541 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-12-14 10:10:24,541 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:10:24,541 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:10:24,541 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:10:24,542 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:10:24,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:24,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:24,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:24,608 INFO L321 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-12-14 10:10:24,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-12-14 10:10:24,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:24,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:24,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:24,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-12-14 10:10:24,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:24,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:24,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-12-14 10:10:24,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:24,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:24,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:24,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:24,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-12-14 10:10:24,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:24,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:24,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:24,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:24,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:24,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:24,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:24,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:24,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:24,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:24,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:24,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:24,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:24,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:24,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:24,991 INFO L321 Elim1Store]: treesize reduction 176, result has 19.3 percent of original size [2022-12-14 10:10:24,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 429 treesize of output 398 [2022-12-14 10:10:25,298 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:25,306 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-14 10:10:25,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-12-14 10:10:25,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:25,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:25,360 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-12-14 10:10:25,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-12-14 10:10:25,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:25,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:25,428 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-12-14 10:10:25,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-12-14 10:10:25,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:25,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:25,595 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-12-14 10:10:25,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-12-14 10:10:25,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:25,686 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:25,708 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-12-14 10:10:25,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-12-14 10:10:25,731 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 24 for LOIs [2022-12-14 10:10:25,741 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:10:26,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1871657677] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:10:26,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:10:26,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5, 4, 5] total 22 [2022-12-14 10:10:26,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447749529] [2022-12-14 10:10:26,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:10:26,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 10:10:26,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:10:26,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 10:10:26,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2022-12-14 10:10:26,388 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 10:10:26,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:10:26,910 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2022-12-14 10:10:26,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 10:10:26,910 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-12-14 10:10:26,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:10:26,911 INFO L225 Difference]: With dead ends: 51 [2022-12-14 10:10:26,911 INFO L226 Difference]: Without dead ends: 49 [2022-12-14 10:10:26,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-12-14 10:10:26,911 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 33 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:10:26,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 55 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:10:26,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-12-14 10:10:26,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2022-12-14 10:10:26,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 34 states have internal predecessors, (39), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 10:10:26,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-12-14 10:10:26,917 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 17 [2022-12-14 10:10:26,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:10:26,917 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-12-14 10:10:26,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 10:10:26,917 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-12-14 10:10:26,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 10:10:26,918 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:10:26,918 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:10:26,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 10:10:27,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:10:27,120 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 10:10:27,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:10:27,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1506401530, now seen corresponding path program 1 times [2022-12-14 10:10:27,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:10:27,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21245393] [2022-12-14 10:10:27,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:27,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:10:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:27,186 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 10:10:27,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:10:27,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21245393] [2022-12-14 10:10:27,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21245393] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:10:27,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949322101] [2022-12-14 10:10:27,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:27,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:10:27,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:10:27,188 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:10:27,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 10:10:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:27,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:10:27,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:10:27,254 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 10:10:27,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:10:27,274 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 10:10:27,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949322101] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:10:27,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [195705718] [2022-12-14 10:10:27,276 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-12-14 10:10:27,276 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:10:27,277 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:10:27,277 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:10:27,277 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:10:27,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:27,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:27,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:27,338 INFO L321 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-12-14 10:10:27,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-12-14 10:10:27,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:27,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:27,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:27,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-12-14 10:10:27,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:27,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:27,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-12-14 10:10:27,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:27,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:27,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:27,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:27,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-12-14 10:10:27,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:27,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:27,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:27,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:27,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:27,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:27,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:27,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:27,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:27,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:27,619 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:27,621 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:27,621 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:27,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:27,623 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:27,650 INFO L321 Elim1Store]: treesize reduction 141, result has 7.2 percent of original size [2022-12-14 10:10:27,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 461 treesize of output 392 [2022-12-14 10:10:27,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:27,715 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-14 10:10:27,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-12-14 10:10:27,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:27,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:27,765 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-12-14 10:10:27,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-12-14 10:10:27,804 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:27,805 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:27,830 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-12-14 10:10:27,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-12-14 10:10:28,389 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:28,389 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:28,415 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-12-14 10:10:28,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-12-14 10:10:28,443 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-12-14 10:10:28,454 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:10:29,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [195705718] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:10:29,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:10:29,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5, 4, 5] total 21 [2022-12-14 10:10:29,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108744585] [2022-12-14 10:10:29,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:10:29,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 10:10:29,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:10:29,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 10:10:29,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2022-12-14 10:10:29,486 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 13 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 10:10:30,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:10:30,384 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2022-12-14 10:10:30,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 10:10:30,384 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-12-14 10:10:30,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:10:30,385 INFO L225 Difference]: With dead ends: 51 [2022-12-14 10:10:30,385 INFO L226 Difference]: Without dead ends: 50 [2022-12-14 10:10:30,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2022-12-14 10:10:30,386 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 23 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:10:30,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 65 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:10:30,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-12-14 10:10:30,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2022-12-14 10:10:30,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 32 states have (on average 1.21875) internal successors, (39), 34 states have internal predecessors, (39), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 10:10:30,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-12-14 10:10:30,395 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 23 [2022-12-14 10:10:30,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:10:30,396 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-12-14 10:10:30,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 10:10:30,396 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-12-14 10:10:30,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 10:10:30,396 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:10:30,397 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:10:30,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-14 10:10:30,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:10:30,599 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 10:10:30,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:10:30,599 INFO L85 PathProgramCache]: Analyzing trace with hash -947122682, now seen corresponding path program 1 times [2022-12-14 10:10:30,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:10:30,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346058634] [2022-12-14 10:10:30,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:30,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:10:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:30,659 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 10:10:30,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:10:30,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346058634] [2022-12-14 10:10:30,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346058634] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:10:30,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266249915] [2022-12-14 10:10:30,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:30,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:10:30,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:10:30,661 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:10:30,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 10:10:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:30,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:10:30,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:10:30,724 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 10:10:30,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:10:30,742 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 10:10:30,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266249915] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:10:30,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1263542170] [2022-12-14 10:10:30,744 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-12-14 10:10:30,744 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:10:30,744 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:10:30,745 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:10:30,745 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:10:30,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:30,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:30,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:30,793 INFO L321 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2022-12-14 10:10:30,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 42 [2022-12-14 10:10:30,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:30,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:30,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:30,857 INFO L321 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-12-14 10:10:30,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-12-14 10:10:30,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:30,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:30,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-12-14 10:10:30,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:30,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:30,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:30,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:30,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-12-14 10:10:31,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:31,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:31,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:31,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:31,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:31,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:31,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:31,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:31,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:31,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:31,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:31,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:31,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:31,164 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:31,164 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:31,183 INFO L321 Elim1Store]: treesize reduction 141, result has 7.2 percent of original size [2022-12-14 10:10:31,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 461 treesize of output 392 [2022-12-14 10:10:31,251 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:31,260 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-14 10:10:31,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-12-14 10:10:31,291 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:31,292 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:31,312 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-12-14 10:10:31,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-12-14 10:10:31,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:31,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:31,364 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-12-14 10:10:31,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-12-14 10:10:31,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:31,884 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:31,907 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-12-14 10:10:31,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-12-14 10:10:31,932 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-12-14 10:10:31,941 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:10:33,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1263542170] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:10:33,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:10:33,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [5, 4, 5] total 23 [2022-12-14 10:10:33,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515988264] [2022-12-14 10:10:33,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:10:33,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 10:10:33,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:10:33,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 10:10:33,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2022-12-14 10:10:33,185 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 15 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 10:10:33,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:10:33,678 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2022-12-14 10:10:33,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 10:10:33,678 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-12-14 10:10:33,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:10:33,679 INFO L225 Difference]: With dead ends: 52 [2022-12-14 10:10:33,679 INFO L226 Difference]: Without dead ends: 35 [2022-12-14 10:10:33,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2022-12-14 10:10:33,679 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:10:33,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 55 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:10:33,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-14 10:10:33,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-12-14 10:10:33,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 28 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:10:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2022-12-14 10:10:33,685 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2022-12-14 10:10:33,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:10:33,685 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2022-12-14 10:10:33,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 10:10:33,685 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2022-12-14 10:10:33,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 10:10:33,685 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:10:33,685 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:10:33,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 10:10:33,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 10:10:33,887 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 10:10:33,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:10:33,888 INFO L85 PathProgramCache]: Analyzing trace with hash -546192735, now seen corresponding path program 1 times [2022-12-14 10:10:33,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:10:33,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522092403] [2022-12-14 10:10:33,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:33,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:10:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:33,940 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 10:10:33,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:10:33,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522092403] [2022-12-14 10:10:33,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522092403] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:10:33,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542481760] [2022-12-14 10:10:33,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:33,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:10:33,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:10:33,941 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:10:33,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 10:10:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:33,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:10:33,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:10:34,003 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 10:10:34,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:10:34,025 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 10:10:34,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542481760] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:10:34,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [756848564] [2022-12-14 10:10:34,027 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-12-14 10:10:34,027 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:10:34,028 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:10:34,028 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:10:34,028 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:10:34,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:34,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:34,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:34,094 INFO L321 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-12-14 10:10:34,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-12-14 10:10:34,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:34,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:34,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:34,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-12-14 10:10:34,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:34,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:34,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-12-14 10:10:34,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:34,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:34,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:34,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:34,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-12-14 10:10:34,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:34,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:34,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:34,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:34,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:34,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:34,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:34,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:34,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:34,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:34,364 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:34,366 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:34,366 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:34,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:34,367 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:34,392 INFO L321 Elim1Store]: treesize reduction 141, result has 7.2 percent of original size [2022-12-14 10:10:34,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 461 treesize of output 392 [2022-12-14 10:10:34,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:34,468 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-14 10:10:34,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-12-14 10:10:34,521 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:34,522 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:34,543 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-12-14 10:10:34,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-12-14 10:10:34,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:34,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:34,600 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-12-14 10:10:34,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-12-14 10:10:34,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:34,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:34,713 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-12-14 10:10:34,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-12-14 10:10:35,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:35,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:35,125 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-12-14 10:10:35,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-12-14 10:10:35,140 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-12-14 10:10:35,147 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:10:36,032 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1865#(and (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#c~0#1.base|) (< 2147483646 |ULTIMATE.start_main_#t~post7#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= |ULTIMATE.start_main_~rv~0#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~j~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#c~0#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-12-14 10:10:36,033 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:10:36,033 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:10:36,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 10 [2022-12-14 10:10:36,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94291687] [2022-12-14 10:10:36,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:10:36,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 10:10:36,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:10:36,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 10:10:36,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2022-12-14 10:10:36,035 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 10:10:36,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:10:36,083 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2022-12-14 10:10:36,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:10:36,083 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-12-14 10:10:36,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:10:36,084 INFO L225 Difference]: With dead ends: 71 [2022-12-14 10:10:36,084 INFO L226 Difference]: Without dead ends: 41 [2022-12-14 10:10:36,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2022-12-14 10:10:36,085 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 10 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:10:36,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 87 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:10:36,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-12-14 10:10:36,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-12-14 10:10:36,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.1875) internal successors, (38), 34 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:10:36,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-12-14 10:10:36,092 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 24 [2022-12-14 10:10:36,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:10:36,092 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-12-14 10:10:36,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 10:10:36,092 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-12-14 10:10:36,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-14 10:10:36,093 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:10:36,093 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:10:36,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 10:10:36,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 10:10:36,294 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 10:10:36,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:10:36,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1649452833, now seen corresponding path program 2 times [2022-12-14 10:10:36,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:10:36,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391692550] [2022-12-14 10:10:36,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:36,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:10:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:36,333 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-14 10:10:36,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:10:36,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391692550] [2022-12-14 10:10:36,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391692550] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:10:36,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299845370] [2022-12-14 10:10:36,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:10:36,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:10:36,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:10:36,334 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:10:36,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 10:10:36,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 10:10:36,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:10:36,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:10:36,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:10:36,401 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:10:36,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:10:36,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299845370] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:10:36,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:10:36,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-14 10:10:36,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528548474] [2022-12-14 10:10:36,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:10:36,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:10:36,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:10:36,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:10:36,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:10:36,403 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:10:36,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:10:36,434 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2022-12-14 10:10:36,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:10:36,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2022-12-14 10:10:36,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:10:36,435 INFO L225 Difference]: With dead ends: 42 [2022-12-14 10:10:36,435 INFO L226 Difference]: Without dead ends: 41 [2022-12-14 10:10:36,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:10:36,435 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:10:36,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 34 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:10:36,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-12-14 10:10:36,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2022-12-14 10:10:36,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:10:36,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-12-14 10:10:36,440 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 30 [2022-12-14 10:10:36,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:10:36,441 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-12-14 10:10:36,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:10:36,441 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-12-14 10:10:36,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-14 10:10:36,441 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:10:36,441 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:10:36,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-14 10:10:36,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:10:36,643 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 10:10:36,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:10:36,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1342597899, now seen corresponding path program 1 times [2022-12-14 10:10:36,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:10:36,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887941358] [2022-12-14 10:10:36,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:36,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:10:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:36,706 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 10:10:36,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:10:36,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887941358] [2022-12-14 10:10:36,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887941358] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:10:36,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683110084] [2022-12-14 10:10:36,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:36,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:10:36,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:10:36,707 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:10:36,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 10:10:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:36,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 10:10:36,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:10:36,797 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 10:10:36,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:10:36,848 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 10:10:36,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683110084] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:10:36,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1292059937] [2022-12-14 10:10:36,850 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-12-14 10:10:36,850 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:10:36,850 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:10:36,850 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:10:36,850 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:10:36,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:36,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:36,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:36,898 INFO L321 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2022-12-14 10:10:36,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 42 [2022-12-14 10:10:36,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:36,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:36,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:36,944 INFO L321 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-12-14 10:10:36,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-12-14 10:10:36,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:36,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:36,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-12-14 10:10:37,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:37,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:37,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:37,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:37,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-12-14 10:10:37,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:37,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:37,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:37,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:37,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:37,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:37,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:37,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:37,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:37,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:37,167 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:37,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:37,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:37,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:37,195 INFO L321 Elim1Store]: treesize reduction 176, result has 19.3 percent of original size [2022-12-14 10:10:37,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 429 treesize of output 398 [2022-12-14 10:10:37,447 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:37,454 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-14 10:10:37,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-12-14 10:10:37,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:37,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:37,510 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-12-14 10:10:37,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-12-14 10:10:37,550 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:37,551 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:37,567 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-12-14 10:10:37,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-12-14 10:10:38,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:38,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:38,022 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-12-14 10:10:38,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-12-14 10:10:38,039 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-12-14 10:10:38,040 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:10:39,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1292059937] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:10:39,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:10:39,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [4, 8, 9] total 34 [2022-12-14 10:10:39,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744888107] [2022-12-14 10:10:39,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:10:39,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-14 10:10:39,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:10:39,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-14 10:10:39,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=963, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 10:10:39,179 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 18 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:10:40,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:10:40,304 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2022-12-14 10:10:40,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 10:10:40,305 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2022-12-14 10:10:40,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:10:40,305 INFO L225 Difference]: With dead ends: 52 [2022-12-14 10:10:40,305 INFO L226 Difference]: Without dead ends: 50 [2022-12-14 10:10:40,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=222, Invalid=1418, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 10:10:40,306 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 37 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:10:40,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 48 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:10:40,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-12-14 10:10:40,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2022-12-14 10:10:40,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.15625) internal successors, (37), 33 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:10:40,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-12-14 10:10:40,313 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 31 [2022-12-14 10:10:40,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:10:40,313 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-12-14 10:10:40,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:10:40,313 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-12-14 10:10:40,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-14 10:10:40,314 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:10:40,314 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:10:40,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 10:10:40,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:10:40,515 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 10:10:40,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:10:40,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1665625517, now seen corresponding path program 1 times [2022-12-14 10:10:40,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:10:40,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176403637] [2022-12-14 10:10:40,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:40,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:10:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:40,599 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-14 10:10:40,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:10:40,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176403637] [2022-12-14 10:10:40,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176403637] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:10:40,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044999223] [2022-12-14 10:10:40,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:40,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:10:40,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:10:40,600 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:10:40,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 10:10:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:40,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 10:10:40,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:10:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 10:10:40,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:10:40,740 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 10:10:40,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044999223] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:10:40,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1352410594] [2022-12-14 10:10:40,742 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-12-14 10:10:40,742 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:10:40,742 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:10:40,742 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:10:40,742 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:10:40,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:40,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:40,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:40,786 INFO L321 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2022-12-14 10:10:40,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 42 [2022-12-14 10:10:40,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:40,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:40,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:40,835 INFO L321 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-12-14 10:10:40,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-12-14 10:10:40,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:40,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:40,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-12-14 10:10:40,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:40,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:40,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:40,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:40,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-12-14 10:10:41,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:41,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:41,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:41,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:41,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:41,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:41,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:41,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:41,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:41,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:41,044 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:41,046 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:41,046 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:41,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:10:41,047 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:41,069 INFO L321 Elim1Store]: treesize reduction 141, result has 7.2 percent of original size [2022-12-14 10:10:41,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 441 treesize of output 392 [2022-12-14 10:10:41,125 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:41,131 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-14 10:10:41,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-12-14 10:10:41,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:41,164 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:41,186 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-12-14 10:10:41,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-12-14 10:10:41,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:41,218 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:41,233 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-12-14 10:10:41,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-12-14 10:10:42,041 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:42,042 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:10:42,061 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-12-14 10:10:42,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-12-14 10:10:42,081 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-12-14 10:10:42,082 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:10:43,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1352410594] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:10:43,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:10:43,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [4, 8, 9] total 34 [2022-12-14 10:10:43,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697561945] [2022-12-14 10:10:43,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:10:43,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-14 10:10:43,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:10:43,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-14 10:10:43,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=962, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 10:10:43,785 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 18 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:10:45,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:10:45,013 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2022-12-14 10:10:45,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-14 10:10:45,013 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-12-14 10:10:45,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:10:45,014 INFO L225 Difference]: With dead ends: 39 [2022-12-14 10:10:45,014 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 10:10:45,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=214, Invalid=1346, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 10:10:45,015 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:10:45,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 8 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:10:45,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 10:10:45,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 10:10:45,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:10:45,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 10:10:45,016 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2022-12-14 10:10:45,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:10:45,016 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 10:10:45,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:10:45,016 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 10:10:45,016 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 10:10:45,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2022-12-14 10:10:45,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2022-12-14 10:10:45,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-12-14 10:10:45,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-12-14 10:10:45,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-12-14 10:10:45,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2022-12-14 10:10:45,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-12-14 10:10:45,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-12-14 10:10:45,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 10:10:45,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 10:10:45,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 10:10:46,420 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2022-12-14 10:10:46,420 INFO L899 garLoopResultBuilder]: For program point L23-3(line 23) no Hoare annotation was computed. [2022-12-14 10:10:46,420 INFO L899 garLoopResultBuilder]: For program point L23-4(line 23) no Hoare annotation was computed. [2022-12-14 10:10:46,421 INFO L895 garLoopResultBuilder]: At program point L23-5(lines 23 26) the Hoare annotation is: (let ((.cse5 (<= 1 |ULTIMATE.start_main_~j~0#1|))) (and (let ((.cse0 (<= 0 |#NULL.base|)) (.cse1 (<= |ULTIMATE.start_main_~#b~0#1.offset| 0)) (.cse2 (<= |ULTIMATE.start_main_~i~0#1| 0)) (.cse3 (<= 0 |ULTIMATE.start_main_~#c~0#1.offset|)) (.cse4 (<= 0 |ULTIMATE.start_main_~#a~0#1.offset|)) (.cse6 (<= |#NULL.offset| 0)) (.cse7 (<= |ULTIMATE.start_main_~#c~0#1.offset| 0)) (.cse8 (<= 0 |ULTIMATE.start_main_~i~0#1|)) (.cse9 (<= |ULTIMATE.start_main_~#a~0#1.offset| 0)) (.cse10 (<= |#NULL.base| 0)) (.cse11 (<= |ULTIMATE.start_main_~rv~0#1| 1)) (.cse12 (<= 0 |#NULL.offset|)) (.cse13 (<= 1 |ULTIMATE.start_main_~rv~0#1|)) (.cse14 (<= 0 |ULTIMATE.start_main_~#b~0#1.offset|))) (or (and .cse0 (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) .cse1 .cse2 .cse3 .cse4 .cse5 (<= 0 |ULTIMATE.start_main_~#c~0#1.base|) .cse6 .cse7 .cse8 (<= |ULTIMATE.start_main_~j~0#1| 2147483647) .cse9 .cse10 .cse11 (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) .cse12 .cse13 .cse14 (<= 0 |#StackHeapBarrier|)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse6 (<= 0 |ULTIMATE.start_main_~j~0#1|) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (<= |ULTIMATE.start_main_~j~0#1| 0)))) (or .cse5 (let ((.cse15 (select |#memory_int| 1))) (and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#c~0#1.base|) (= 34 (select |#length| 2)) (= 400000 (select |#length| |ULTIMATE.start_main_~#b~0#1.base|)) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#a~0#1.base|) (= 2 (select |#length| 1)) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#b~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#c~0#1.base|) 1) (= 400000 (select |#length| |ULTIMATE.start_main_~#a~0#1.base|)) (= (select |#valid| 1) 1) (= (select |#valid| |ULTIMATE.start_main_~#b~0#1.base|) 1) (= (select |#valid| |ULTIMATE.start_main_~#a~0#1.base|) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (not (= |ULTIMATE.start_main_~#c~0#1.base| |ULTIMATE.start_main_~#b~0#1.base|)) (not (= |ULTIMATE.start_main_~#c~0#1.base| |ULTIMATE.start_main_~#a~0#1.base|)) (= (select .cse15 0) 48) (not (= |ULTIMATE.start_main_~#b~0#1.base| |ULTIMATE.start_main_~#a~0#1.base|)) (= (select |#length| |ULTIMATE.start_main_~#c~0#1.base|) 400000) (= (select .cse15 1) 0) (< 0 |#StackHeapBarrier|)))))) [2022-12-14 10:10:46,421 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 41) no Hoare annotation was computed. [2022-12-14 10:10:46,421 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 40) no Hoare annotation was computed. [2022-12-14 10:10:46,421 INFO L899 garLoopResultBuilder]: For program point L36-1(lines 36 40) no Hoare annotation was computed. [2022-12-14 10:10:46,421 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2022-12-14 10:10:46,421 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 37) no Hoare annotation was computed. [2022-12-14 10:10:46,422 INFO L895 garLoopResultBuilder]: At program point L28-1(lines 28 34) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#c~0#1.base|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= |ULTIMATE.start_main_~rv~0#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~j~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#c~0#1.offset| 0) (= |#NULL.base| 0)) [2022-12-14 10:10:46,422 INFO L899 garLoopResultBuilder]: For program point L41-3(line 41) no Hoare annotation was computed. [2022-12-14 10:10:46,422 INFO L899 garLoopResultBuilder]: For program point L41-4(line 41) no Hoare annotation was computed. [2022-12-14 10:10:46,422 INFO L895 garLoopResultBuilder]: At program point L41-5(lines 41 43) the Hoare annotation is: (let ((.cse0 (<= 100000 |ULTIMATE.start_main_~i~0#1|)) (.cse1 (<= 0 |ULTIMATE.start_main_~#a~0#1.base|)) (.cse2 (= |ULTIMATE.start_main_~#b~0#1.offset| 0)) (.cse3 (<= 0 |ULTIMATE.start_main_~#c~0#1.base|)) (.cse4 (<= |ULTIMATE.start_main_~j~0#1| 2147483647)) (.cse5 (<= |ULTIMATE.start_main_~rv~0#1| 1)) (.cse6 (= |ULTIMATE.start_main_~#a~0#1.offset| 0)) (.cse7 (<= 100000 |ULTIMATE.start_main_~j~0#1|)) (.cse8 (= |#NULL.offset| 0)) (.cse9 (<= 0 |ULTIMATE.start_main_~#b~0#1.base|)) (.cse10 (<= 0 |#StackHeapBarrier|)) (.cse11 (= |ULTIMATE.start_main_~#c~0#1.offset| 0)) (.cse12 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= |ULTIMATE.start_main_~x~0#1| 0) .cse9 .cse10 .cse11 .cse12) (and .cse0 .cse1 .cse2 (<= |ULTIMATE.start_main_~x~0#1| 2147483647) .cse3 (<= 1 |ULTIMATE.start_main_~x~0#1|) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12))) [2022-12-14 10:10:46,422 INFO L899 garLoopResultBuilder]: For program point L37-3(line 37) no Hoare annotation was computed. [2022-12-14 10:10:46,422 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2022-12-14 10:10:46,422 INFO L899 garLoopResultBuilder]: For program point L33(line 33) no Hoare annotation was computed. [2022-12-14 10:10:46,422 INFO L899 garLoopResultBuilder]: For program point L37-4(line 37) no Hoare annotation was computed. [2022-12-14 10:10:46,422 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 10:10:46,422 INFO L899 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2022-12-14 10:10:46,422 INFO L895 garLoopResultBuilder]: At program point L37-5(lines 37 39) the Hoare annotation is: (let ((.cse0 (<= 100000 |ULTIMATE.start_main_~i~0#1|)) (.cse1 (<= 0 |ULTIMATE.start_main_~#a~0#1.base|)) (.cse2 (<= 0 |ULTIMATE.start_main_~#c~0#1.base|)) (.cse3 (<= |ULTIMATE.start_main_~j~0#1| 2147483647)) (.cse4 (<= |ULTIMATE.start_main_~rv~0#1| 1)) (.cse5 (<= 100000 |ULTIMATE.start_main_~j~0#1|)) (.cse6 (<= 0 |ULTIMATE.start_main_~#b~0#1.base|)) (.cse7 (<= 0 |#StackHeapBarrier|)) (.cse8 (= |ULTIMATE.start_main_~#c~0#1.offset| 0)) (.cse9 (= |#NULL.base| 0))) (or (and .cse0 .cse1 (<= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#a~0#1.offset|) .cse2 (<= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) .cse3 (<= |ULTIMATE.start_main_~#a~0#1.offset| 0) .cse4 .cse5 .cse6 (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~#b~0#1.offset|) .cse7 .cse8 .cse9) (and .cse0 .cse1 (= |ULTIMATE.start_main_~#b~0#1.offset| 0) .cse2 .cse3 .cse4 (= |ULTIMATE.start_main_~#a~0#1.offset| 0) .cse5 (= |#NULL.offset| 0) (not (= |ULTIMATE.start_main_~rv~0#1| 0)) (= |ULTIMATE.start_main_~x~0#1| 0) .cse6 .cse7 .cse8 .cse9))) [2022-12-14 10:10:46,423 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 37) no Hoare annotation was computed. [2022-12-14 10:10:46,423 INFO L895 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| 4))) (and (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#c~0#1.base|) (< |ULTIMATE.start_main_~x~0#1| 100000) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| .cse0)) |ULTIMATE.start_main_#t~mem11#1|) (<= |ULTIMATE.start_main_~rv~0#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#c~0#1.base|) (+ |ULTIMATE.start_main_~#c~0#1.offset| .cse0)) |ULTIMATE.start_main_#t~mem12#1|) (<= 100000 |ULTIMATE.start_main_~j~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#c~0#1.offset| 0) (= |#NULL.base| 0))) [2022-12-14 10:10:46,423 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 10:10:46,423 INFO L899 garLoopResultBuilder]: For program point L42-1(line 42) no Hoare annotation was computed. [2022-12-14 10:10:46,423 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#c~0#1.base|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= |ULTIMATE.start_main_~rv~0#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~j~0#1|) (= |#NULL.offset| 0) (let ((.cse2 (* |ULTIMATE.start_main_~x~0#1| 4))) (let ((.cse0 (= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| .cse2)) |ULTIMATE.start_main_#t~mem8#1|)) (.cse1 (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#b~0#1.base|) (+ |ULTIMATE.start_main_~#b~0#1.offset| .cse2))))) (or (and .cse0 (<= 1 |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~x~0#1| 100000) .cse1) (and .cse0 .cse1 (not (= |ULTIMATE.start_main_~rv~0#1| 0)) (= |ULTIMATE.start_main_~x~0#1| 0))))) (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#c~0#1.offset| 0) (= |#NULL.base| 0)) [2022-12-14 10:10:46,423 INFO L899 garLoopResultBuilder]: For program point L38-1(line 38) no Hoare annotation was computed. [2022-12-14 10:10:46,423 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2022-12-14 10:10:46,423 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 41) no Hoare annotation was computed. [2022-12-14 10:10:46,424 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(line 13) no Hoare annotation was computed. [2022-12-14 10:10:46,424 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 13) the Hoare annotation is: true [2022-12-14 10:10:46,426 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:10:46,428 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 10:10:46,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 10:10:46 BoogieIcfgContainer [2022-12-14 10:10:46,443 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 10:10:46,443 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 10:10:46,443 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 10:10:46,443 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 10:10:46,444 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:10:19" (3/4) ... [2022-12-14 10:10:46,446 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 10:10:46,450 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-14 10:10:46,453 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2022-12-14 10:10:46,453 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-12-14 10:10:46,453 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 10:10:46,453 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 10:10:46,477 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 10:10:46,477 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 10:10:46,477 INFO L158 Benchmark]: Toolchain (without parser) took 27985.62ms. Allocated memory was 123.7MB in the beginning and 186.6MB in the end (delta: 62.9MB). Free memory was 90.0MB in the beginning and 68.1MB in the end (delta: 21.9MB). Peak memory consumption was 85.9MB. Max. memory is 16.1GB. [2022-12-14 10:10:46,478 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 123.7MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:10:46,478 INFO L158 Benchmark]: CACSL2BoogieTranslator took 160.28ms. Allocated memory is still 123.7MB. Free memory was 89.5MB in the beginning and 79.3MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 10:10:46,478 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.47ms. Allocated memory is still 123.7MB. Free memory was 78.9MB in the beginning and 77.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:10:46,478 INFO L158 Benchmark]: Boogie Preprocessor took 18.37ms. Allocated memory is still 123.7MB. Free memory was 77.7MB in the beginning and 76.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:10:46,478 INFO L158 Benchmark]: RCFGBuilder took 339.44ms. Allocated memory is still 123.7MB. Free memory was 76.0MB in the beginning and 60.5MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 10:10:46,479 INFO L158 Benchmark]: TraceAbstraction took 27402.69ms. Allocated memory was 123.7MB in the beginning and 186.6MB in the end (delta: 62.9MB). Free memory was 60.0MB in the beginning and 71.2MB in the end (delta: -11.2MB). Peak memory consumption was 80.1MB. Max. memory is 16.1GB. [2022-12-14 10:10:46,479 INFO L158 Benchmark]: Witness Printer took 33.81ms. Allocated memory is still 186.6MB. Free memory was 71.2MB in the beginning and 68.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:10:46,480 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 123.7MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 160.28ms. Allocated memory is still 123.7MB. Free memory was 89.5MB in the beginning and 79.3MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.47ms. Allocated memory is still 123.7MB. Free memory was 78.9MB in the beginning and 77.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.37ms. Allocated memory is still 123.7MB. Free memory was 77.7MB in the beginning and 76.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 339.44ms. Allocated memory is still 123.7MB. Free memory was 76.0MB in the beginning and 60.5MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 27402.69ms. Allocated memory was 123.7MB in the beginning and 186.6MB in the end (delta: 62.9MB). Free memory was 60.0MB in the beginning and 71.2MB in the end (delta: -11.2MB). Peak memory consumption was 80.1MB. Max. memory is 16.1GB. * Witness Printer took 33.81ms. Allocated memory is still 186.6MB. Free memory was 71.2MB in the beginning and 68.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 37]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 37]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 30 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 27.3s, OverallIterations: 14, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 251 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 231 mSDsluCounter, 677 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 466 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1520 IncrementalHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 211 mSDtfsCounter, 1520 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 648 GetRequests, 428 SyntacticMatches, 3 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1734 ImplicationChecksByTransitivity, 11.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=9, InterpolantAutomatonStates: 132, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 36 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 19 PreInvPairs, 35 NumberOfFragments, 612 HoareAnnotationTreeSize, 19 FomulaSimplifications, 759 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 6272 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 480 NumberOfCodeBlocks, 461 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 620 ConstructedInterpolants, 0 QuantifiedInterpolants, 996 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1511 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 33 InterpolantComputations, 7 PerfectInterpolantSequences, 195/266 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 7.3s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 12, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 124, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 264, TOOLS_POST_TIME: 4.9s, TOOLS_POST_CALL_APPLICATIONS: 64, TOOLS_POST_CALL_TIME: 1.2s, TOOLS_POST_RETURN_APPLICATIONS: 56, TOOLS_POST_RETURN_TIME: 0.2s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 384, TOOLS_QUANTIFIERELIM_TIME: 6.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.4s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 568, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 78, DOMAIN_JOIN_TIME: 0.4s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 29, DOMAIN_WIDEN_TIME: 0.3s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 46, DOMAIN_ISSUBSETEQ_TIME: 0.1s, DOMAIN_ISBOTTOM_APPLICATIONS: 124, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 17, LOOP_SUMMARIZER_CACHE_MISSES: 17, LOOP_SUMMARIZER_OVERALL_TIME: 4.6s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 4.6s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 46, CALL_SUMMARIZER_APPLICATIONS: 56, CALL_SUMMARIZER_CACHE_MISSES: 6, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 2989, DAG_COMPRESSION_RETAINED_NODES: 394, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((((((((((((((((((0 <= #NULL && 0 <= a) && b <= 0) && i <= 0) && 0 <= c) && 0 <= a) && 1 <= j) && 0 <= c) && #NULL <= 0) && c <= 0) && 0 <= i) && j <= 2147483647) && a <= 0) && #NULL <= 0) && rv <= 1) && 0 <= b) && 0 <= #NULL) && 1 <= rv) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) || (((((((((((((((0 <= #NULL && b <= 0) && i <= 0) && 0 <= c) && 0 <= a) && #NULL <= 0) && 0 <= j) && c <= 0) && 0 <= i) && a <= 0) && #NULL <= 0) && rv <= 1) && 0 <= #NULL) && 1 <= rv) && 0 <= b) && j <= 0)) && (1 <= j || (((((((((((((((((((unknown-#StackHeapBarrier-unknown < c && 34 == unknown-#length-unknown[2]) && 400000 == unknown-#length-unknown[b]) && unknown-#StackHeapBarrier-unknown < a) && 2 == unknown-#length-unknown[1]) && unknown-#StackHeapBarrier-unknown < b) && \valid[c] == 1) && 400000 == unknown-#length-unknown[a]) && \valid[1] == 1) && \valid[b] == 1) && \valid[a] == 1) && \valid[0] == 0) && \valid[2] == 1) && !(c == b)) && !(c == a)) && unknown-#memory_int-unknown[1][0] == 48) && !(b == a)) && unknown-#length-unknown[c] == 400000) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown)) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((((((((((((100000 <= i && 0 <= a) && b <= 0) && x <= 2147483647) && 0 <= a) && 0 <= c) && #NULL <= 0) && 1 <= x) && j <= 2147483647) && a <= 0) && rv <= 1) && 100000 <= j) && 0 <= b) && 0 <= #NULL) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && c == 0) && #NULL == 0) || ((((((((((((((100000 <= i && 0 <= a) && b == 0) && 0 <= c) && j <= 2147483647) && rv <= 1) && a == 0) && 100000 <= j) && #NULL == 0) && !(rv == 0)) && x == 0) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && c == 0) && #NULL == 0) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((((((((0 <= a && b == 0) && 0 <= c) && 0 <= i) && j <= 2147483647) && rv <= 1) && a == 0) && 100000 <= j) && #NULL == 0) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && c == 0) && #NULL == 0 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (((((((((((((100000 <= i && 0 <= a) && b == 0) && 0 <= c) && j <= 2147483647) && rv <= 1) && a == 0) && 100000 <= j) && #NULL == 0) && x == 0) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && c == 0) && #NULL == 0) || ((((((((((((((100000 <= i && 0 <= a) && b == 0) && x <= 2147483647) && 0 <= c) && 1 <= x) && j <= 2147483647) && rv <= 1) && a == 0) && 100000 <= j) && #NULL == 0) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && c == 0) && #NULL == 0) RESULT: Ultimate proved your program to be correct! [2022-12-14 10:10:46,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57011572-b382-4371-a87f-0931e4b68a01/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE