./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/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_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 352373f9b097794e6947f5064b04543cec809ba042ac0b3a931e0e161838d7d3 --- 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 16:15:19,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 16:15:19,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 16:15:19,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 16:15:19,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 16:15:19,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 16:15:19,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 16:15:19,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 16:15:19,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 16:15:19,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 16:15:19,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 16:15:19,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 16:15:19,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 16:15:19,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 16:15:19,520 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 16:15:19,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 16:15:19,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 16:15:19,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 16:15:19,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 16:15:19,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 16:15:19,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 16:15:19,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 16:15:19,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 16:15:19,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 16:15:19,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 16:15:19,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 16:15:19,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 16:15:19,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 16:15:19,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 16:15:19,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 16:15:19,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 16:15:19,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 16:15:19,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 16:15:19,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 16:15:19,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 16:15:19,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 16:15:19,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 16:15:19,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 16:15:19,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 16:15:19,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 16:15:19,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 16:15:19,544 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 16:15:19,565 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 16:15:19,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 16:15:19,566 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 16:15:19,566 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 16:15:19,567 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 16:15:19,567 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 16:15:19,567 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 16:15:19,567 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 16:15:19,567 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 16:15:19,568 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 16:15:19,568 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 16:15:19,568 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 16:15:19,568 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 16:15:19,568 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 16:15:19,569 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 16:15:19,569 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 16:15:19,569 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 16:15:19,569 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 16:15:19,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 16:15:19,570 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 16:15:19,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 16:15:19,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 16:15:19,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 16:15:19,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 16:15:19,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 16:15:19,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 16:15:19,572 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 16:15:19,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 16:15:19,572 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 16:15:19,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 16:15:19,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 16:15:19,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 16:15:19,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 16:15:19,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 16:15:19,573 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 16:15:19,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 16:15:19,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 16:15:19,574 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 16:15:19,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 16:15:19,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 16:15:19,574 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 16:15:19,574 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_689673b4-2cf5-4d88-8f12-5cb536c86057/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 352373f9b097794e6947f5064b04543cec809ba042ac0b3a931e0e161838d7d3 [2022-12-14 16:15:19,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 16:15:19,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 16:15:19,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 16:15:19,783 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 16:15:19,783 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 16:15:19,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c [2022-12-14 16:15:22,397 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 16:15:22,510 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 16:15:22,511 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c [2022-12-14 16:15:22,515 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/data/102eae422/b0a134767ee9408bb22638f5e231150a/FLAG415622ee8 [2022-12-14 16:15:22,526 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/data/102eae422/b0a134767ee9408bb22638f5e231150a [2022-12-14 16:15:22,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 16:15:22,529 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 16:15:22,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 16:15:22,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 16:15:22,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 16:15:22,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:15:22" (1/1) ... [2022-12-14 16:15:22,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f60773f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:22, skipping insertion in model container [2022-12-14 16:15:22,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:15:22" (1/1) ... [2022-12-14 16:15:22,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 16:15:22,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 16:15:22,672 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_689673b4-2cf5-4d88-8f12-5cb536c86057/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c[537,550] [2022-12-14 16:15:22,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:15:22,689 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 16:15:22,697 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_689673b4-2cf5-4d88-8f12-5cb536c86057/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c[537,550] [2022-12-14 16:15:22,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:15:22,710 INFO L208 MainTranslator]: Completed translation [2022-12-14 16:15:22,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:22 WrapperNode [2022-12-14 16:15:22,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 16:15:22,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 16:15:22,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 16:15:22,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 16:15:22,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:22" (1/1) ... [2022-12-14 16:15:22,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:22" (1/1) ... [2022-12-14 16:15:22,733 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-12-14 16:15:22,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 16:15:22,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 16:15:22,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 16:15:22,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 16:15:22,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:22" (1/1) ... [2022-12-14 16:15:22,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:22" (1/1) ... [2022-12-14 16:15:22,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:22" (1/1) ... [2022-12-14 16:15:22,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:22" (1/1) ... [2022-12-14 16:15:22,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:22" (1/1) ... [2022-12-14 16:15:22,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:22" (1/1) ... [2022-12-14 16:15:22,747 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:22" (1/1) ... [2022-12-14 16:15:22,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:22" (1/1) ... [2022-12-14 16:15:22,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 16:15:22,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 16:15:22,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 16:15:22,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 16:15:22,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:22" (1/1) ... [2022-12-14 16:15:22,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 16:15:22,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:15:22,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 16:15:22,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 16:15:22,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 16:15:22,806 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 16:15:22,806 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 16:15:22,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 16:15:22,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 16:15:22,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 16:15:22,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 16:15:22,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 16:15:22,859 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 16:15:22,861 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 16:15:22,959 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 16:15:23,010 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 16:15:23,010 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 16:15:23,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:15:23 BoogieIcfgContainer [2022-12-14 16:15:23,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 16:15:23,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 16:15:23,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 16:15:23,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 16:15:23,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:15:22" (1/3) ... [2022-12-14 16:15:23,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@203b3d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:15:23, skipping insertion in model container [2022-12-14 16:15:23,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:22" (2/3) ... [2022-12-14 16:15:23,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@203b3d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:15:23, skipping insertion in model container [2022-12-14 16:15:23,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:15:23" (3/3) ... [2022-12-14 16:15:23,019 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound50.c [2022-12-14 16:15:23,034 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 16:15:23,034 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 16:15:23,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 16:15:23,090 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;@139627ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 16:15:23,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 16:15:23,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 16:15:23,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 16:15:23,102 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:15:23,103 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:15:23,103 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:15:23,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:15:23,108 INFO L85 PathProgramCache]: Analyzing trace with hash -419629030, now seen corresponding path program 1 times [2022-12-14 16:15:23,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:15:23,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823029536] [2022-12-14 16:15:23,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:15:23,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:15:23,216 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 16:15:23,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [609099123] [2022-12-14 16:15:23,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:15:23,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:15:23,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:15:23,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:15:23,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 16:15:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:15:23,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 16:15:23,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:15:23,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 16:15:23,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:15:23,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:15:23,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823029536] [2022-12-14 16:15:23,378 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 16:15:23,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609099123] [2022-12-14 16:15:23,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609099123] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:15:23,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:15:23,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 16:15:23,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396694498] [2022-12-14 16:15:23,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:15:23,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 16:15:23,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:15:23,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 16:15:23,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 16:15:23,422 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 16:15:23,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:15:23,498 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2022-12-14 16:15:23,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 16:15:23,500 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2022-12-14 16:15:23,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:15:23,507 INFO L225 Difference]: With dead ends: 42 [2022-12-14 16:15:23,507 INFO L226 Difference]: Without dead ends: 26 [2022-12-14 16:15:23,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:15:23,513 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 16:15:23,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 56 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 16:15:23,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-14 16:15:23,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-12-14 16:15:23,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 16 states have internal predecessors, (16), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 16:15:23,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-12-14 16:15:23,550 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 17 [2022-12-14 16:15:23,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:15:23,552 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-12-14 16:15:23,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 16:15:23,552 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-12-14 16:15:23,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 16:15:23,553 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:15:23,553 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:15:23,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 16:15:23,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 16:15:23,755 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:15:23,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:15:23,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1592245763, now seen corresponding path program 1 times [2022-12-14 16:15:23,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:15:23,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154918829] [2022-12-14 16:15:23,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:15:23,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:15:23,798 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 16:15:23,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350536505] [2022-12-14 16:15:23,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:15:23,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:15:23,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:15:23,801 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:15:23,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 16:15:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:15:23,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 16:15:23,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:15:23,888 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 16:15:23,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:15:23,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:15:23,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154918829] [2022-12-14 16:15:23,888 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 16:15:23,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350536505] [2022-12-14 16:15:23,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350536505] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:15:23,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:15:23,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 16:15:23,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631603148] [2022-12-14 16:15:23,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:15:23,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 16:15:23,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:15:23,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 16:15:23,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 16:15:23,891 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 16:15:23,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:15:23,932 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-12-14 16:15:23,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 16:15:23,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 23 [2022-12-14 16:15:23,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:15:23,933 INFO L225 Difference]: With dead ends: 32 [2022-12-14 16:15:23,933 INFO L226 Difference]: Without dead ends: 25 [2022-12-14 16:15:23,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:15:23,935 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 16:15:23,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 42 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 16:15:23,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-14 16:15:23,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-12-14 16:15:23,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 16:15:23,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-12-14 16:15:23,941 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 23 [2022-12-14 16:15:23,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:15:23,942 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-12-14 16:15:23,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 16:15:23,942 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-12-14 16:15:23,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 16:15:23,943 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:15:23,943 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:15:23,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 16:15:24,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-14 16:15:24,145 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:15:24,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:15:24,147 INFO L85 PathProgramCache]: Analyzing trace with hash -556494917, now seen corresponding path program 1 times [2022-12-14 16:15:24,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:15:24,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870276591] [2022-12-14 16:15:24,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:15:24,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:15:24,192 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 16:15:24,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2054123838] [2022-12-14 16:15:24,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:15:24,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:15:24,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:15:24,197 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:15:24,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 16:15:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:15:24,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-14 16:15:24,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:15:25,820 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 16:15:25,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:15:31,683 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 16:15:31,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:15:31,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870276591] [2022-12-14 16:15:31,684 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 16:15:31,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054123838] [2022-12-14 16:15:31,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054123838] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:15:31,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [659989564] [2022-12-14 16:15:31,698 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-12-14 16:15:31,698 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 16:15:31,700 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 16:15:31,704 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 16:15:31,705 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 16:15:32,193 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 43 for LOIs [2022-12-14 16:15:32,319 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2022-12-14 16:15:32,321 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 16:15:35,218 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '482#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 16:15:35,218 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 16:15:35,218 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 16:15:35,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-12-14 16:15:35,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106371427] [2022-12-14 16:15:35,219 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 16:15:35,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 16:15:35,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:15:35,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 16:15:35,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2022-12-14 16:15:35,220 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 12 states have internal predecessors, (22), 7 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-12-14 16:15:41,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:15:41,833 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2022-12-14 16:15:41,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 16:15:41,833 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 12 states have internal predecessors, (22), 7 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 24 [2022-12-14 16:15:41,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:15:41,835 INFO L225 Difference]: With dead ends: 40 [2022-12-14 16:15:41,835 INFO L226 Difference]: Without dead ends: 38 [2022-12-14 16:15:41,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=153, Invalid=903, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 16:15:41,837 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 36 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 16:15:41,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 68 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 16:15:41,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-12-14 16:15:41,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2022-12-14 16:15:41,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.173913043478261) internal successors, (27), 25 states have internal predecessors, (27), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 16:15:41,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2022-12-14 16:15:41,846 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 24 [2022-12-14 16:15:41,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:15:41,846 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2022-12-14 16:15:41,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 12 states have internal predecessors, (22), 7 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-12-14 16:15:41,847 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-12-14 16:15:41,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-14 16:15:41,847 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:15:41,847 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:15:41,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 16:15:42,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-14 16:15:42,049 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:15:42,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:15:42,051 INFO L85 PathProgramCache]: Analyzing trace with hash 762174686, now seen corresponding path program 1 times [2022-12-14 16:15:42,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:15:42,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115688649] [2022-12-14 16:15:42,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:15:42,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:15:42,092 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 16:15:42,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [734686458] [2022-12-14 16:15:42,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:15:42,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:15:42,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:15:42,095 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:15:42,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 16:15:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:15:42,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 16:15:42,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:15:42,171 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 16:15:42,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:15:42,236 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 16:15:42,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:15:42,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115688649] [2022-12-14 16:15:42,237 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 16:15:42,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734686458] [2022-12-14 16:15:42,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734686458] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:15:42,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [632558048] [2022-12-14 16:15:42,239 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 16:15:42,239 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 16:15:42,240 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 16:15:42,240 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 16:15:42,240 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 16:15:42,723 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-12-14 16:15:42,727 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2022-12-14 16:15:42,728 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 16:15:43,226 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '802#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 16:15:43,226 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 16:15:43,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 16:15:43,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2022-12-14 16:15:43,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364642797] [2022-12-14 16:15:43,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 16:15:43,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 16:15:43,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:15:43,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 16:15:43,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-12-14 16:15:43,228 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-14 16:15:43,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:15:43,322 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2022-12-14 16:15:43,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 16:15:43,323 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 30 [2022-12-14 16:15:43,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:15:43,324 INFO L225 Difference]: With dead ends: 43 [2022-12-14 16:15:43,324 INFO L226 Difference]: Without dead ends: 36 [2022-12-14 16:15:43,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2022-12-14 16:15:43,326 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 14 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 16:15:43,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 64 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 16:15:43,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-12-14 16:15:43,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-12-14 16:15:43,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 24 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 16:15:43,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2022-12-14 16:15:43,332 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 30 [2022-12-14 16:15:43,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:15:43,332 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2022-12-14 16:15:43,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-14 16:15:43,332 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2022-12-14 16:15:43,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-14 16:15:43,333 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:15:43,333 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:15:43,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 16:15:43,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:15:43,535 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:15:43,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:15:43,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1596629466, now seen corresponding path program 2 times [2022-12-14 16:15:43,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:15:43,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180132614] [2022-12-14 16:15:43,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:15:43,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:15:43,557 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 16:15:43,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1286068028] [2022-12-14 16:15:43,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 16:15:43,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:15:43,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:15:43,558 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:15:43,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 16:15:43,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 16:15:43,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:15:43,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-14 16:15:43,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:15:44,138 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 27 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-14 16:15:44,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:15:49,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:15:49,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180132614] [2022-12-14 16:15:49,569 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 16:15:49,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286068028] [2022-12-14 16:15:49,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286068028] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:15:49,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [714445406] [2022-12-14 16:15:49,572 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-12-14 16:15:49,572 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 16:15:49,572 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 16:15:49,572 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 16:15:49,572 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 16:15:49,917 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 43 for LOIs [2022-12-14 16:15:49,971 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2022-12-14 16:15:49,972 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 16:15:51,908 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1106#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 16:15:51,908 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 16:15:51,908 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:15:51,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2022-12-14 16:15:51,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129725033] [2022-12-14 16:15:51,908 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-14 16:15:51,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 16:15:51,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:15:51,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 16:15:51,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=856, Unknown=0, NotChecked=0, Total=992 [2022-12-14 16:15:51,910 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 11 states have internal predecessors, (23), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2022-12-14 16:15:52,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:15:52,404 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2022-12-14 16:15:52,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 16:15:52,405 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 11 states have internal predecessors, (23), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 45 [2022-12-14 16:15:52,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:15:52,405 INFO L225 Difference]: With dead ends: 46 [2022-12-14 16:15:52,405 INFO L226 Difference]: Without dead ends: 44 [2022-12-14 16:15:52,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 61 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=199, Invalid=1207, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 16:15:52,408 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:15:52,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 51 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 16:15:52,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-12-14 16:15:52,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2022-12-14 16:15:52,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 16:15:52,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-12-14 16:15:52,420 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 45 [2022-12-14 16:15:52,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:15:52,420 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-12-14 16:15:52,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 11 states have internal predecessors, (23), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2022-12-14 16:15:52,420 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-12-14 16:15:52,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 16:15:52,422 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:15:52,422 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:15:52,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 16:15:52,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:15:52,624 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:15:52,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:15:52,625 INFO L85 PathProgramCache]: Analyzing trace with hash -645370373, now seen corresponding path program 3 times [2022-12-14 16:15:52,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:15:52,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799767133] [2022-12-14 16:15:52,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:15:52,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:15:52,637 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 16:15:52,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884144208] [2022-12-14 16:15:52,638 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 16:15:52,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:15:52,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:15:52,639 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:15:52,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 16:15:54,548 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 16:15:54,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:15:54,551 WARN L261 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 72 conjunts are in the unsatisfiable core [2022-12-14 16:15:54,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:16:32,414 WARN L233 SmtUtils]: Spent 9.10s on a formula simplification. DAG size of input: 67 DAG size of output: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:16:43,951 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 7 proven. 45 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-14 16:16:43,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:17:09,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:17:09,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799767133] [2022-12-14 16:17:09,610 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 16:17:09,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884144208] [2022-12-14 16:17:09,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884144208] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:17:09,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [220551896] [2022-12-14 16:17:09,613 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-12-14 16:17:09,613 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 16:17:09,613 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 16:17:09,613 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 16:17:09,613 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 16:17:09,946 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 43 for LOIs [2022-12-14 16:17:10,024 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2022-12-14 16:17:10,025 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 16:17:13,339 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1479#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 16:17:13,340 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 16:17:13,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:17:13,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-12-14 16:17:13,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020020721] [2022-12-14 16:17:13,340 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-14 16:17:13,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 16:17:13,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:17:13,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 16:17:13,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1150, Unknown=11, NotChecked=0, Total=1332 [2022-12-14 16:17:13,341 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 12 states have internal predecessors, (22), 7 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-12-14 16:17:16,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 16:17:17,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 16:17:25,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 16:17:27,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 16:17:28,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:17:28,886 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2022-12-14 16:17:28,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 16:17:28,886 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.375) internal successors, (22), 12 states have internal predecessors, (22), 7 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 52 [2022-12-14 16:17:28,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:17:28,887 INFO L225 Difference]: With dead ends: 53 [2022-12-14 16:17:28,887 INFO L226 Difference]: Without dead ends: 51 [2022-12-14 16:17:28,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 75 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 59.5s TimeCoverageRelationStatistics Valid=188, Invalid=1283, Unknown=11, NotChecked=0, Total=1482 [2022-12-14 16:17:28,888 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 17 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-12-14 16:17:28,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 119 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 304 Invalid, 1 Unknown, 0 Unchecked, 10.7s Time] [2022-12-14 16:17:28,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-12-14 16:17:28,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2022-12-14 16:17:28,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 34 states have internal predecessors, (34), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 16:17:28,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2022-12-14 16:17:28,902 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 52 [2022-12-14 16:17:28,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:17:28,903 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2022-12-14 16:17:28,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.375) internal successors, (22), 12 states have internal predecessors, (22), 7 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-12-14 16:17:28,903 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2022-12-14 16:17:28,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-14 16:17:28,904 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:17:28,904 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:17:28,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 16:17:29,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:17:29,106 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:17:29,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:17:29,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1079241402, now seen corresponding path program 4 times [2022-12-14 16:17:29,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:17:29,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548425823] [2022-12-14 16:17:29,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:17:29,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:17:29,144 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 16:17:29,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1019532433] [2022-12-14 16:17:29,144 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 16:17:29,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:17:29,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:17:29,146 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:17:29,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 16:17:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:17:29,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 47 conjunts are in the unsatisfiable core [2022-12-14 16:17:29,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:17:30,165 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 28 proven. 58 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-12-14 16:17:30,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:17:34,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:17:34,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548425823] [2022-12-14 16:17:34,285 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 16:17:34,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019532433] [2022-12-14 16:17:34,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019532433] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:17:34,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1999479457] [2022-12-14 16:17:34,287 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-12-14 16:17:34,288 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 16:17:34,288 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 16:17:34,288 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 16:17:34,288 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 16:17:34,626 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 43 for LOIs [2022-12-14 16:17:34,679 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2022-12-14 16:17:34,680 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 16:17:37,858 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1862#(and (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 16:17:37,858 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 16:17:37,858 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:17:37,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-12-14 16:17:37,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015173235] [2022-12-14 16:17:37,858 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-14 16:17:37,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 16:17:37,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:17:37,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 16:17:37,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=987, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 16:17:37,859 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 17 states, 15 states have (on average 1.8) internal successors, (27), 13 states have internal predecessors, (27), 9 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-12-14 16:17:38,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:17:38,430 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2022-12-14 16:17:38,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 16:17:38,430 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.8) internal successors, (27), 13 states have internal predecessors, (27), 9 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) Word has length 59 [2022-12-14 16:17:38,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:17:38,431 INFO L225 Difference]: With dead ends: 58 [2022-12-14 16:17:38,431 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 16:17:38,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 85 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=150, Invalid=1110, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 16:17:38,431 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 16:17:38,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 153 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 16:17:38,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 16:17:38,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 16:17:38,432 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 16:17:38,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 16:17:38,432 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2022-12-14 16:17:38,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:17:38,432 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 16:17:38,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 1.8) internal successors, (27), 13 states have internal predecessors, (27), 9 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-12-14 16:17:38,433 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 16:17:38,433 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 16:17:38,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 16:17:38,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-14 16:17:38,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 16:17:38,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 16:17:48,282 WARN L233 SmtUtils]: Spent 9.61s on a formula simplification. DAG size of input: 148 DAG size of output: 87 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-12-14 16:17:54,588 WARN L233 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 148 DAG size of output: 87 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-12-14 16:17:54,759 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 16:17:54,759 INFO L902 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2022-12-14 16:17:54,759 INFO L895 garLoopResultBuilder]: At program point L27-1(line 27) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 50)) [2022-12-14 16:17:54,759 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2022-12-14 16:17:54,759 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-12-14 16:17:54,759 INFO L902 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: true [2022-12-14 16:17:54,760 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 16:17:54,760 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 45) the Hoare annotation is: (let ((.cse9 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (let ((.cse0 (div |ULTIMATE.start_main_~b~0#1| 2)) (.cse6 (div |ULTIMATE.start_main_~b~0#1| 8)) (.cse7 (div |ULTIMATE.start_main_~b~0#1| 4)) (.cse3 (= .cse9 (+ |ULTIMATE.start_main_~z~0#1| (* 2 (* (div |ULTIMATE.start_main_~x~0#1| 2) |ULTIMATE.start_main_~y~0#1|))))) (.cse1 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse5 (* 16 |ULTIMATE.start_main_~a~0#1|)) (.cse8 (div |ULTIMATE.start_main_~b~0#1| 32)) (.cse4 (div |ULTIMATE.start_main_~b~0#1| 16)) (.cse2 (<= |ULTIMATE.start_main_~b~0#1| 50))) (or (and (= |ULTIMATE.start_main_~y~0#1| .cse0) .cse1 (= |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~a~0#1|)) .cse2 .cse3) (and (= |ULTIMATE.start_main_~y~0#1| .cse4) (= .cse5 |ULTIMATE.start_main_~x~0#1|) .cse1 (not (= 0 .cse6)) .cse2 .cse3) (and (= |ULTIMATE.start_main_~y~0#1| .cse7) (= |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~a~0#1| 4)) .cse1 (not (= 0 .cse0)) .cse2 .cse3) (and (= (div (+ (- 1) .cse8) 2) |ULTIMATE.start_main_~y~0#1|) .cse1 (not (= .cse8 0)) .cse2 (exists ((|v_ULTIMATE.start_main_~x~0#1_61| Int)) (= (+ (* |v_ULTIMATE.start_main_~x~0#1_61| .cse8) |ULTIMATE.start_main_~z~0#1|) (+ |v_ULTIMATE.start_main_~x~0#1_61| .cse9)))) (and (= (* |ULTIMATE.start_main_~a~0#1| 8) |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~y~0#1| .cse6) (not (= .cse7 0)) .cse1 .cse2 .cse3) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse1 (= |ULTIMATE.start_main_~z~0#1| 0) .cse2 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (and (not (= 0 .cse4)) .cse1 (let ((.cse10 (+ (* (* |ULTIMATE.start_main_~a~0#1| .cse4) 16) |ULTIMATE.start_main_~z~0#1|)) (.cse11 (= (mod .cse4 2) 1))) (or (and (= .cse10 (+ .cse5 .cse9)) .cse11 (= |ULTIMATE.start_main_~y~0#1| (div (+ (- 1) .cse4) 2))) (and (= .cse8 |ULTIMATE.start_main_~y~0#1|) (= .cse9 .cse10) (not .cse11)))) .cse2 (= (* 32 |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~x~0#1|))))) [2022-12-14 16:17:54,760 INFO L895 garLoopResultBuilder]: At program point L34-3(lines 34 45) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (and (<= 1 |ULTIMATE.start_main_~b~0#1|) (= (+ |ULTIMATE.start_main_~z~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse0) (= |ULTIMATE.start_main_~z~0#1| .cse0) (<= |ULTIMATE.start_main_~b~0#1| 50))) [2022-12-14 16:17:54,760 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2022-12-14 16:17:54,760 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse9 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (let ((.cse0 (div |ULTIMATE.start_main_~b~0#1| 2)) (.cse6 (div |ULTIMATE.start_main_~b~0#1| 8)) (.cse7 (div |ULTIMATE.start_main_~b~0#1| 4)) (.cse3 (= .cse9 (+ |ULTIMATE.start_main_~z~0#1| (* 2 (* (div |ULTIMATE.start_main_~x~0#1| 2) |ULTIMATE.start_main_~y~0#1|))))) (.cse1 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse5 (* 16 |ULTIMATE.start_main_~a~0#1|)) (.cse8 (div |ULTIMATE.start_main_~b~0#1| 32)) (.cse4 (div |ULTIMATE.start_main_~b~0#1| 16)) (.cse2 (<= |ULTIMATE.start_main_~b~0#1| 50))) (or (and (= |ULTIMATE.start_main_~y~0#1| .cse0) .cse1 (= |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~a~0#1|)) .cse2 .cse3) (and (= |ULTIMATE.start_main_~y~0#1| .cse4) (= .cse5 |ULTIMATE.start_main_~x~0#1|) .cse1 (not (= 0 .cse6)) .cse2 .cse3) (and (= |ULTIMATE.start_main_~y~0#1| .cse7) (= |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~a~0#1| 4)) .cse1 (not (= 0 .cse0)) .cse2 .cse3) (and (= (div (+ (- 1) .cse8) 2) |ULTIMATE.start_main_~y~0#1|) .cse1 (not (= .cse8 0)) .cse2 (exists ((|v_ULTIMATE.start_main_~x~0#1_61| Int)) (= (+ (* |v_ULTIMATE.start_main_~x~0#1_61| .cse8) |ULTIMATE.start_main_~z~0#1|) (+ |v_ULTIMATE.start_main_~x~0#1_61| .cse9)))) (and (= (* |ULTIMATE.start_main_~a~0#1| 8) |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~y~0#1| .cse6) (not (= .cse7 0)) .cse1 .cse2 .cse3) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse1 (= |ULTIMATE.start_main_~z~0#1| 0) .cse2 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (and (not (= 0 .cse4)) .cse1 (let ((.cse10 (+ (* (* |ULTIMATE.start_main_~a~0#1| .cse4) 16) |ULTIMATE.start_main_~z~0#1|)) (.cse11 (= (mod .cse4 2) 1))) (or (and (= .cse10 (+ .cse5 .cse9)) .cse11 (= |ULTIMATE.start_main_~y~0#1| (div (+ (- 1) .cse4) 2))) (and (= .cse8 |ULTIMATE.start_main_~y~0#1|) (= .cse9 .cse10) (not .cse11)))) .cse2 (= (* 32 |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~x~0#1|))))) [2022-12-14 16:17:54,761 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 34 45) no Hoare annotation was computed. [2022-12-14 16:17:54,761 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 11) the Hoare annotation is: true [2022-12-14 16:17:54,761 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2022-12-14 16:17:54,761 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 15) no Hoare annotation was computed. [2022-12-14 16:17:54,761 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 16) no Hoare annotation was computed. [2022-12-14 16:17:54,761 INFO L899 garLoopResultBuilder]: For program point L13-2(lines 12 18) no Hoare annotation was computed. [2022-12-14 16:17:54,761 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 12 18) no Hoare annotation was computed. [2022-12-14 16:17:54,761 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 12 18) the Hoare annotation is: true [2022-12-14 16:17:54,761 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2022-12-14 16:17:54,764 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2022-12-14 16:17:54,765 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 16:17:54,771 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_61,QUANTIFIED] [2022-12-14 16:17:54,772 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_61,QUANTIFIED] [2022-12-14 16:17:54,776 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_61,QUANTIFIED] [2022-12-14 16:17:54,776 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_61,QUANTIFIED] [2022-12-14 16:17:54,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 04:17:54 BoogieIcfgContainer [2022-12-14 16:17:54,778 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 16:17:54,778 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 16:17:54,778 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 16:17:54,778 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 16:17:54,778 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:15:23" (3/4) ... [2022-12-14 16:17:54,780 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 16:17:54,784 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-12-14 16:17:54,784 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-14 16:17:54,786 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-12-14 16:17:54,786 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-12-14 16:17:54,786 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 16:17:54,786 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 16:17:54,802 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((y == b / 2 && 1 <= b) && x == 2 * a) && b <= 50) && a * b == z + 2 * (x / 2 * y)) || (((((y == b / 16 && 16 * a == x) && 1 <= b) && !(0 == b / 8)) && b <= 50) && a * b == z + 2 * (x / 2 * y))) || (((((y == b / 4 && x == a * 4) && 1 <= b) && !(0 == b / 2)) && b <= 50) && a * b == z + 2 * (x / 2 * y))) || (((((-1 + b / 32) / 2 == y && 1 <= b) && !(b / 32 == 0)) && b <= 50) && (\exists v_ULTIMATE.start_main_~x~0#1_61 : int :: v_ULTIMATE.start_main_~x~0#1_61 * (b / 32) + z == v_ULTIMATE.start_main_~x~0#1_61 + a * b))) || (((((a * 8 == x && y == b / 8) && !(b / 4 == 0)) && 1 <= b) && b <= 50) && a * b == z + 2 * (x / 2 * y))) || ((((b == y && 1 <= b) && z == 0) && b <= 50) && a == x)) || ((((!(0 == b / 16) && 1 <= b) && (((a * (b / 16) * 16 + z == 16 * a + a * b && b / 16 % 2 == 1) && y == (-1 + b / 16) / 2) || ((b / 32 == y && a * b == a * (b / 16) * 16 + z) && !(b / 16 % 2 == 1)))) && b <= 50) && 32 * a == x) [2022-12-14 16:17:54,807 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 16:17:54,807 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 16:17:54,807 INFO L158 Benchmark]: Toolchain (without parser) took 152278.44ms. Allocated memory is still 151.0MB. Free memory was 108.4MB in the beginning and 52.8MB in the end (delta: 55.6MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2022-12-14 16:17:54,807 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 125.8MB. Free memory is still 67.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 16:17:54,807 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.32ms. Allocated memory is still 151.0MB. Free memory was 107.9MB in the beginning and 97.9MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 16:17:54,808 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.42ms. Allocated memory is still 151.0MB. Free memory was 97.9MB in the beginning and 96.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 16:17:54,808 INFO L158 Benchmark]: Boogie Preprocessor took 14.09ms. Allocated memory is still 151.0MB. Free memory was 96.4MB in the beginning and 95.3MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 16:17:54,808 INFO L158 Benchmark]: RCFGBuilder took 263.67ms. Allocated memory is still 151.0MB. Free memory was 95.3MB in the beginning and 82.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 16:17:54,808 INFO L158 Benchmark]: TraceAbstraction took 151763.44ms. Allocated memory is still 151.0MB. Free memory was 81.7MB in the beginning and 55.0MB in the end (delta: 26.7MB). Peak memory consumption was 53.1MB. Max. memory is 16.1GB. [2022-12-14 16:17:54,809 INFO L158 Benchmark]: Witness Printer took 28.83ms. Allocated memory is still 151.0MB. Free memory was 55.0MB in the beginning and 52.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 16:17:54,810 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 125.8MB. Free memory is still 67.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 181.32ms. Allocated memory is still 151.0MB. Free memory was 107.9MB in the beginning and 97.9MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.42ms. Allocated memory is still 151.0MB. Free memory was 97.9MB in the beginning and 96.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.09ms. Allocated memory is still 151.0MB. Free memory was 96.4MB in the beginning and 95.3MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 263.67ms. Allocated memory is still 151.0MB. Free memory was 95.3MB in the beginning and 82.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 151763.44ms. Allocated memory is still 151.0MB. Free memory was 81.7MB in the beginning and 55.0MB in the end (delta: 26.7MB). Peak memory consumption was 53.1MB. Max. memory is 16.1GB. * Witness Printer took 28.83ms. Allocated memory is still 151.0MB. Free memory was 55.0MB in the beginning and 52.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_61,QUANTIFIED] * 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: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 151.7s, OverallIterations: 7, TraceHistogramMax: 7, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 23.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 16.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 115 SdHoareTripleChecker+Valid, 13.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 105 mSDsluCounter, 553 SdHoareTripleChecker+Invalid, 13.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 446 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1260 IncrementalHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 107 mSDtfsCounter, 1260 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 552 GetRequests, 358 SyntacticMatches, 24 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2270 ImplicationChecksByTransitivity, 85.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=6, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 5 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 22 PreInvPairs, 39 NumberOfFragments, 575 HoareAnnotationTreeSize, 22 FomulaSimplifications, 66 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 531 FormulaSimplificationTreeSizeReductionInter, 16.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 93.6s InterpolantComputationTime, 250 NumberOfCodeBlocks, 246 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 295 ConstructedInterpolants, 3 QuantifiedInterpolants, 2410 SizeOfPredicates, 31 NumberOfNonLiveVariables, 754 ConjunctsInSsa, 220 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 223/363 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant [2022-12-14 16:17:54,816 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_61,QUANTIFIED] [2022-12-14 16:17:54,816 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_61,QUANTIFIED] [2022-12-14 16:17:54,817 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_61,QUANTIFIED] [2022-12-14 16:17:54,817 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_61,QUANTIFIED] Derived loop invariant: (((((((((y == b / 2 && 1 <= b) && x == 2 * a) && b <= 50) && a * b == z + 2 * (x / 2 * y)) || (((((y == b / 16 && 16 * a == x) && 1 <= b) && !(0 == b / 8)) && b <= 50) && a * b == z + 2 * (x / 2 * y))) || (((((y == b / 4 && x == a * 4) && 1 <= b) && !(0 == b / 2)) && b <= 50) && a * b == z + 2 * (x / 2 * y))) || (((((-1 + b / 32) / 2 == y && 1 <= b) && !(b / 32 == 0)) && b <= 50) && (\exists v_ULTIMATE.start_main_~x~0#1_61 : int :: v_ULTIMATE.start_main_~x~0#1_61 * (b / 32) + z == v_ULTIMATE.start_main_~x~0#1_61 + a * b))) || (((((a * 8 == x && y == b / 8) && !(b / 4 == 0)) && 1 <= b) && b <= 50) && a * b == z + 2 * (x / 2 * y))) || ((((b == y && 1 <= b) && z == 0) && b <= 50) && a == x)) || ((((!(0 == b / 16) && 1 <= b) && (((a * (b / 16) * 16 + z == 16 * a + a * b && b / 16 % 2 == 1) && y == (-1 + b / 16) / 2) || ((b / 32 == y && a * b == a * (b / 16) * 16 + z) && !(b / 16 % 2 == 1)))) && b <= 50) && 32 * a == x) RESULT: Ultimate proved your program to be correct! [2022-12-14 16:17:54,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689673b4-2cf5-4d88-8f12-5cb536c86057/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